Please look at the comments for this post to read some of your student's work!
26 comments:
Anonymous
said...
Science By: Carolyn R
I think Kevin is right because the load is close to the fulcrum and the effort is far from the fulcrum. The load is 30cm and the effort is 50cm. On Randy’s the load is 40cm and the effort is 40cm. We were taught that the load had to be close to the fulcrum and the effort had to be far away from the fulcrum. So Kevin’s is set up right and Randy’s is wrong
I think Kevin was right because his fulcrum was closer to the load than Randy’s load. “The closer the load is to the fulcrum, the less effort it will take to lift / balance” therefore, Kevin’s will be easier to lift.
I think that Kevin is correct. One will take less effort because the fulcrum is in a different place. The load is closer in Kevin’s lever than in Randy’s. The effort is also farther on Kevin’s lever than in Randy’s, so Kevin’s takes less effort. Randy’s reason for thinking that they were the same was because he probably didn’t notice the different positions of the fulcrums.
I think that Kevin is right because you want the load as close to the fulcrum because the least effort is needed. So Kevin’s lever is more efficient than Randy’s because, Kevin’s lever has the fulcrum closer to the load.
Kevin is right because the load is supposed to be close to the fulcrum and the effort should be far away from the fulcrum. So it depends where the effort is and where the load is on the lever. Next time Randy should think before he speaks, or he should rethink it if someone says he’s wrong.
I think Kevin was right because his fulcrum was closer to the load than Randy’s load. “The closer the load is to the fulcrum, the less effort it will take to lift / balance” therefore, Kevin’s will be easier to lift.
The student that was right about the statement is Kevin because the fulcrums are in different positions. Kevin’s simple machine is getting a mechanical advantage because the fulcrum is closer to the load than the effort. Randy’s does not get any mechanical advantage because the load and effort are the same distance from the fulcrum.
I think Kevin’s is right because the fulcrum is closer to the load so it is easier because the closer the load is to the fulcrum, the less effort is needed to lift the load.
Kevin was correct. The farther the load is from the fulcrum, the more effort is needed to lift the load. Kevin’s lever uses less effort and is more efficient. Kevin’s lever is also better because the closer the effort is to the fulcrum, the more effort is needed to lift the load. But, both experiments are controlled experiments. I suggest that Randy moves the fulcrum closer to the load, and farther from the effort.
Kevin is right because, Kevin’s lever has the most effort because there is more weight to the left side and because it was on the 10 instead of the 0, then it would be even. Randy’s lever is going to require less effort because the fulcrum is on the 0 and Kevin’s on the 10. So that’s why Kevin is right and Randy is wrong.
By: Jaime S. Kevin is right because both of their fulcrums are placed in different spots. Both of their loads are placed in the same spot [2.4 N] and both of their efforts are in the same spot [40].I also know that Kevin is right because the closer or farther the effort is to the fulcrum, the more or less effort is needed to lift the load and in this case the load is 2.4 N. Kevin is going to need more effort then Randy because his fulcrum is farther away from the effort. So Kevin has set it up more efficiently.
By Jack P. Kevin is right, because Kevin fulcrum should be on zero. Then if would put on zero, he will have to use more effort. Then Randy will have to use less effort. Also Kevin probably knows I that he knows to put it on zero, but he made a mistake and knows it. Those are my reasons why Kevin is right.
I think Kevin is right because the fulcrum is in different spots. The one who has to use less effort would be Kevin’s because the closer the load is to the fulcrum the less effort. There levers are different because it matters were the fulcrum. Kevin’s lever is on ten on the left side and Randy’s lever is on the zero. The closer the load is to the fulcrum the less effort you have to use. So Randy’s takes more effort because the load is further away from the fulcrum.
Kevin is right because the levers, although the load and effort are in the same place, the fulcrum is in a different place. You might be thinking “what difference does that make?” well; it actually does make a difference, a large one. In one lever experiment the load is farther away from the fulcrum that the other. Because of this, one is easier to lift (in other words, the one that uses the least effort), the one that has the load closer to the fulcrum than the other; in other words, Kevin’s.
To prove my point, I would show them the graphs we constructed (both A + B) because then they would see, with graph A, as the load get closer to the fulcrum, you use less effort. Also, with graph B, when the effort gets further from the fulcrum, you use less effort. If they didn’t believe that I would show them the Newton measuring system (it is a device that measures effort). If you put the two graph’s information together you get, “to lift the lever experiment the easiest way, you want the load closer to the fulcrum, and the effort farther from the fulcrum.” Next time, I would say to Randy, check the levers over carefully to make sure everything is the same.
I think that Kevin was right. My reasons for thinking this are, because the load is closer to the fulcrum than the effort on Kevin’s lever, his system will use less effort. Whereas Randy’s lever has the effort and the load equal distances away from the fulcrum. With Randy’s system, he will not be able to gain as much of a mechanical advantage as Kevin’s lever. This is why I think Kevin’s statement is correct.
Kevin is right because the closer the load is to the fulcrum the less effort is required. Randy’s lever is going to require the least effort because the fulcrum is in the middle. Kevin’s will require more effort because the fulcrum is closer to the load, which will make you apply more effort. The effort and load are in the same place but the fulcrums are in different places. Also the closer the effort is to the fulcrum the more effort is needed to lift the load. Next time Randy should do the experiment before he makes a conclusion. As you can see Kevin’s theory is right.
I think Kevin is right that the two fulcrums will not take the same amount of effort. The two examples shown, that the fulcrums are located in different areas. Randy’s lever will take less effort because the fulcrum is farther away from the load. The closer the fulcrum is to the load the more effort it will take to get it lifted. The position of the fulcrum can change the effort. The closer the fulcrum is the more effort it will take .I suggest that next time that they try placing the effort in a different area.
I Think Kevin is right because Randy’s fulcrum is on the zero and the lode is on the forty and the effort is on the same number on the other side of the fulcrum and Kevin fulcrum is on ten and the lode is on the forty and the effort is on the forty so I expand Kevin is right.
I think Kevin is correct cause (alliteration :) they did put their fulcrums in different places on the lever arm and it makes all the difference where it is. You may think that Randy is right because his is perfectly centered, but as it usually is in the response sheets silly Randy is wrong. Kevin set it up right because his fulcrum is closest to the load and the effort is furthest away from the fulcrum. With Randy’s it would be harder to do and you probably wouldn’t get much of a mechanical advantage. )(The effort probably wouldn’t be less than 2.4 newtons.) Next time they do this experiment I would tell them to set it up with the load closest to the fulcrum and the effort farthest away from the fulcrum, down the lever arm. That way their lever would be set up better and more efficiently.
Kevin is right because; the closer the fulcrum is to the load the less effort is needed. So Randy is wrong because his would weigh more because his load is farther away from the fulcrum.
I think that Kevin was right. In the experiment Randy had his fulcrum on the 0 and Kevin had his fulcrum on 10. They both had their effort on 40 and had their load on 2.4 N. I know that the closer the effort is to the fulcrum the more effort is needed to lift the load. Also I know that the farther the effort is to the fulcrum the less effort is needed to lift the load. So I know that Kevin’s experiment is going to be harder to lift. By: Valya
Kevin is right because his fulcrum is closest or the load witch makes it eyesore tow lift because in the movie it side the effort is less if the fulcrum is closed to the load. Also He is right because in class we study what the fulcrum load and the effort is and we learned the the less effort is when the fulcrum is closer tow the load just like the movie.
I think Kevin’s answer is right because it uses less effort, because if you look at the fulcrum it is placed a little differed than Randy’s. In Kevin’s the fulcrum is closer to the loud than Randy’s, and the effort is farther from the fulcrum than Randy’s. So Kevin’s uses less effort than Randy’s.
Response Sheet-Levers By:Sophie I think Kevin was right because the closer the effort is to the fulcrom, the more effort is needed to lift the load. So Randy's lever needs more because the fulcrom is closer to the effort. Kevin's lever needs less effort because the fulcrom is farther away from the effort. So that is why I think Kevin's opinion was right.
RESPONSE SHEET-LEVERS I think that Kevin was right because the fulcrm is in a different position on Randy's lever than Kevin's, so it would probably take less effort on Kevin's than Randy's, becuse the closer the fulcrum is to the load, the less effort it takes. So Kevin, YOU ARE CORRECT! -lauren, rm206
Kevin was correct since the position of the fulcrum is diffrent for both of their levers which would get you different results. Today and last week my class did an experiment in which we tested leverage. When we kept the load in the same place and moved the effort we found we found it most effective to put the effort as far away as possible from the fulcrum, when we kept the effort in the same place and moved the load we found it most effective to put the load closer to the fulcrum. Kevin's lever has the load closer to the fulcrum than Randy's. Also the effort is just as far from the fulcrum as Randy's. Bassically it would be more effective to use Kevin's lever.
26 comments:
Science
By: Carolyn R
I think Kevin is right because the load is close to the fulcrum and the effort is far from the fulcrum. The load is 30cm and the effort is 50cm. On Randy’s the load is 40cm and the effort is 40cm. We were taught that the load had to be close to the fulcrum and the effort had to be far away from the fulcrum. So Kevin’s is set up right and Randy’s is wrong
By: Andrew B.
I think Kevin was right because his fulcrum was closer to the load than Randy’s load. “The closer the load is to the fulcrum, the less effort it will take to lift / balance” therefore, Kevin’s will be easier to lift.
I think that Kevin is correct. One will take less effort because the fulcrum is in a different place. The load is closer in Kevin’s lever than in Randy’s. The effort is also farther on Kevin’s lever than in Randy’s, so Kevin’s takes less effort. Randy’s reason for thinking that they were the same was because he probably didn’t notice the different positions of the fulcrums.
Roman
I think that Kevin is right because you want the load as close to the fulcrum because the least effort is needed. So Kevin’s lever is more efficient than Randy’s because, Kevin’s lever has the fulcrum closer to the load.
By: Will H.
Lever Summary
By: Unknown Erin
Kevin is right because the load is supposed to be close to the fulcrum and the effort should be far away from the fulcrum. So it depends where the effort is and where the load is on the lever. Next time Randy should think before he speaks, or he should rethink it if someone says he’s wrong.
By: Andrew B.
I think Kevin was right because his fulcrum was closer to the load than Randy’s load. “The closer the load is to the fulcrum, the less effort it will take to lift / balance” therefore, Kevin’s will be easier to lift.
By: Dominic F.
The student that was right about the statement is Kevin because the fulcrums are in different positions. Kevin’s simple machine is getting a mechanical advantage because the fulcrum is closer to the load than the effort. Randy’s does not get any mechanical advantage because the load and effort are the same distance from the fulcrum.
Levers response sheet!!
I think Kevin’s is right because the fulcrum is closer to the load so it is easier because the closer the load is to the fulcrum, the less effort is needed to lift the load.
-Jonah P.
Response Sheet-Levers
By: Raquel R.
Kevin was correct. The farther the load is from the fulcrum, the more effort is needed to lift the load. Kevin’s lever uses less effort and is more efficient. Kevin’s lever is also better because the closer the effort is to the fulcrum, the more effort is needed to lift the load. But, both experiments are controlled experiments. I suggest that Randy moves the fulcrum closer to the load, and farther from the effort.
Kevin is right because, Kevin’s lever has the most effort because there is more weight to the left side and because it was on the 10 instead of the 0, then it would be even. Randy’s lever is going to require less effort because the fulcrum is on the 0 and Kevin’s on the 10. So that’s why Kevin is right and Randy is wrong.
Max
By: Jaime S.
Kevin is right because both of their fulcrums are placed in different spots. Both of their loads are placed in the same spot [2.4 N] and both of their efforts are in the same spot [40].I also know that Kevin is right because the closer or farther the effort is to the fulcrum, the more or less effort is needed to lift the load and in this case the load is 2.4 N. Kevin is going to need more effort then Randy because his fulcrum is farther away from the effort. So Kevin has set it up more efficiently.
Response Sheet
By Jack P.
Kevin is right, because Kevin fulcrum should be on zero. Then if would put on zero, he will have to use more effort. Then Randy will have to use less effort. Also Kevin probably knows I that he knows to put it on zero, but he made a mistake and knows it. Those are my reasons why Kevin is right.
Science Summary
BY: Aleem H.
I think Kevin is right because the fulcrum is in different spots. The one who has to use less effort would be Kevin’s because the closer the load is to the fulcrum the less effort. There levers are different because it matters were the fulcrum. Kevin’s lever is on ten on the left side and Randy’s lever is on the zero. The closer the load is to the fulcrum the less effort you have to use. So Randy’s takes more effort because the load is further away from the fulcrum.
Lever Response Sheet
By: Cara S.
Kevin is right because the levers, although the load and effort are in the same place, the fulcrum is in a different place. You might be thinking “what difference does that make?” well; it actually does make a difference, a large one. In one lever experiment the load is farther away from the fulcrum that the other. Because of this, one is easier to lift (in other words, the one that uses the least effort), the one that has the load closer to the fulcrum than the other; in other words, Kevin’s.
To prove my point, I would show them the graphs we constructed (both A + B) because then they would see, with graph A, as the load get closer to the fulcrum, you use less effort. Also, with graph B, when the effort gets further from the fulcrum, you use less effort. If they didn’t believe that I would show them the Newton measuring system (it is a device that measures effort). If you put the two graph’s information together you get, “to lift the lever experiment the easiest way, you want the load closer to the fulcrum, and the effort farther from the fulcrum.” Next time, I would say to Randy, check the levers over carefully to make sure everything is the same.
Science Response
By: Nick
I think that Kevin was right. My reasons for thinking this are, because the load is closer to the fulcrum than the effort on Kevin’s lever, his system will use less effort. Whereas Randy’s lever has the effort and the load equal distances away from the fulcrum. With Randy’s system, he will not be able to gain as much of a mechanical advantage as Kevin’s lever. This is why I think Kevin’s statement is correct.
Kevin is right because the closer the load is to the fulcrum the less effort is required. Randy’s lever is going to require the least effort because the fulcrum is in the middle. Kevin’s will require more effort because the fulcrum is closer to the load, which will make you apply more effort. The effort and load are in the same place but the fulcrums are in different places. Also the closer the effort is to the fulcrum the more effort is needed to lift the load. Next time Randy should do the experiment before he makes a conclusion. As you can see Kevin’s theory is right.
Christine M.
I think Kevin is right that the two fulcrums will not take the same amount of effort. The two examples shown, that the fulcrums are located in different areas. Randy’s lever will take less effort because the fulcrum is farther away from the load. The closer the fulcrum is to the load the more effort it will take to get it lifted. The position of the fulcrum can change the effort. The closer the fulcrum is the more effort it will take .I suggest that next time that they try placing the effort in a different area.
By: Erin D.
I Think Kevin is right because Randy’s fulcrum is on the zero and the lode is on the forty and the effort is on the same number on the other side of the fulcrum and Kevin fulcrum is on ten and the lode is on the forty and the effort is on the forty so I expand Kevin is right.
By Hanad A
Lever Response Sheet
By: Anne D.
I think Kevin is correct cause (alliteration :) they did put their fulcrums in different places on the lever arm and it makes all the difference where it is.
You may think that Randy is right because his is perfectly centered, but as it usually is in the response sheets silly Randy is wrong. Kevin set it up right because his fulcrum is closest to the load and the effort is furthest away from the fulcrum. With Randy’s it would be harder to do and you probably wouldn’t get much of a mechanical advantage. )(The effort probably wouldn’t be less than 2.4 newtons.)
Next time they do this experiment I would tell them to set it up with the load closest to the fulcrum and the effort farthest away from the fulcrum, down the lever arm. That way their lever would be set up better and more efficiently.
Anne D.
Kevin is right because; the closer the fulcrum is to the load the less effort is needed. So Randy is wrong because his would weigh more because his load is farther away from the fulcrum.
By: Devon
Response Sheet-Levers
I think that Kevin was right. In the experiment Randy had his fulcrum on the 0 and Kevin had his fulcrum on 10. They both had their effort on 40 and had their load on 2.4 N. I know that the closer the effort is to the fulcrum the more effort is needed to lift the load. Also I know that the farther the effort is to the fulcrum the less effort is needed to lift the load. So I know that Kevin’s experiment is going to be harder to lift. By: Valya
matt .H responce
Kevin is right because his fulcrum is closest or the load witch makes it eyesore tow lift because in the movie it side the effort is less if the fulcrum is closed to the load. Also
He is right because in class we study what the fulcrum load and the effort is and we learned the the less effort is when the fulcrum is closer tow the load just like the movie.
Response Sheet
I think Kevin’s answer is right because it uses less effort, because if you look at the fulcrum it is placed a little differed than Randy’s. In Kevin’s the fulcrum is closer to the loud than Randy’s, and the effort is farther from the fulcrum than Randy’s. So Kevin’s uses less effort than Randy’s.
Marc
Response Sheet-Levers
By:Sophie
I think Kevin was right because the closer the effort is to the fulcrom, the more effort is needed to lift the load. So Randy's lever needs more because the fulcrom is closer to the effort. Kevin's lever needs less effort because the fulcrom is farther away from the effort. So that is why I think Kevin's opinion was right.
RESPONSE SHEET-LEVERS
I think that Kevin was right because the fulcrm is in a different position on Randy's lever than Kevin's, so it would probably take less effort on Kevin's than Randy's, becuse the closer the fulcrum is to the load, the less effort it takes. So Kevin,
YOU ARE CORRECT!
-lauren, rm206
Lever Response
Sophia
Kevin was correct since the position of the fulcrum is diffrent for both of their levers which would get you different results. Today and last week my class did an experiment in which we tested leverage. When we kept the load in the same place and moved the effort we found we found it most effective to put the effort as far away as possible from the fulcrum, when we kept the effort in the same place and moved the load we found it most effective to put the load closer to the fulcrum. Kevin's lever has the load closer to the fulcrum than Randy's. Also the effort is just as far from the fulcrum as Randy's. Bassically it would be more effective to use Kevin's lever.
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