If the effort arm is longer than the load arm in a first-class lever, what happens?

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A More effort is needed
B It balances equally
C Less effort is needed
D No load can be lifted

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Answer: C. Less effort is needed

By the lever rule, effort x effort arm = load x load arm. If the effort arm is longer than the load arm, a smaller effort can balance the load, so less effort is needed.

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If the effort arm is longer than the load arm in a first-class lever, what happens?

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