Question

For the girl to lift this rock, she must push down with a force _____.

A. equal to the weight of the rock
B. less than the weight of the rock
C. greater than the weight of the rock

Answer 1

B.

Explanation:

B. The girl would have to use less force because she is using a simple machine, or a lever. The lever makes it easier to lift the rock because the rock is closer to the fulcrum.