Levers Physical science lab

Physics
Tutor: None Selected Time limit: 1 Day

1. For a first class lever, what happens to the effort force needed to lift a resistance as the effort arm is increased?

2. In a third class lever an effort force larger than the resistance is needed. What is the advantage of this type of lever system? Why would someone want to use it?

May 10th, 2015

1.  As the effort arm length is increased the effort force required to lift the load DECREASES.

2. The advantage of a third class lever is that it prevents too much force to be applied to the load. For example, if someone wanted to move a load gently because it is delicate, then they would use a third class lever to prevent too much force to act on it.

May 10th, 2015

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May 10th, 2015
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