Pulleys

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PIRA index: 1M20.10

Description

A series of pulleys demonstrate the ability to use an equal amount of force to lift several different masses or that the amount of force needed to lift a mass is reduced as more pulleys are used.

Equipment

• system of pulleys
• masses
• force scales
• diagrams of pulley arrangements

Instructions

Arrange the pulleys according to the diagrams. The first setup shows that through the use of pulleys, the same amount of force can lift a different amount of mass. The second setup shows that the amount of force needed to lift a mass is reduced as more pulleys are used.

NOTE: First setup missing picture.

Keywords

pulley, mass, force, lift

Images & Movies

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  Figure1

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  Figure2