How Cool Would This Be?

Kyle uses simple machines
Originally uploaded by sfgamchick.

I don't know if I'd be able to pull it off, but I'd love to be able to set something like this up as a demonstration of the concept of advantages pulleys can give us!

Look carefully at the picture. Can anyone tell how much of a mechanical advantage this set up gives? To figure it out, count the number of rope segments are supporting the load.

Sophia - Levers Game

Here's a game Sophia found that uses the principle of levers we've been learning about in class.

http://addictinggames.com/levers.html

Will - Principle of the Lever

Here is a website that has the principle of the lever:

http://www.factmonster.com/ce6/sci/A0859254.html

Will

Will

leverage
Originally uploaded by kaY:).

The picture shows that by using leverage people can lift things that are many times our own weight.

Leverage

leverage
Originally uploaded by kaY:).

What does this picture tell you about how we can use levers to gain a mechanical advantage? What is the relationship between the effort, the load and the fulcrum which allows the load to be lifted?