A farmer in Dominica uses a simple lever to lift a 600 N stone. She applies an effort of 150 N. What is the mechanical advantage of the lever?

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Question

A farmer in Dominica uses a simple lever to lift a 600 N stone. She applies an effort of 150 N. What is the mechanical advantage of the lever?

Accepted Answer

4 — Award 1 mark for correct calculation. Mechanical Advantage = load ÷ effort = 600 N ÷ 150 N = 4. A incorrectly inverts the ratio (150÷600). C incorrectly subtracts the forces. D incorrectly adds the forces.

Answer

4

Answer

750

Answer

0.25

Answer

450

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