dt 1.5-pulleys and belts

fixed pulleys

-uses a wheel with a groove in it and a rope that sits in the groove.

-allows you to change the direction of the fvorce when needed which makes lifting easier, but the weight will feel the same.

Block and tackle pulley

-Uses two or more pulleys, one fixed and one moveable to help reduce the amount of effort needed to lift a load.

-It provides a mechanical advantage making a load easier to lift.

Belts

-A drive belt (loop of flexible rubber) connect two or more pulleys together. The belt transfers power from the pulley to the receiving system. In the instance of a car, a belt transfers engine power to the alternator to recharge the battery.

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