Rahul wants to lift a heavy rock using a long crowbar (... | Science Class 5

Science Class 5 Other

Asked by AKSHAY GURU VARADHARAJAN · CHRYSALIS HIGH, HORAMAVU

Rahul wants to lift a heavy rock using a long crowbar (Class I lever). To make his work easier and use less force, where should he place the fulcrum?

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A Exactly in the middle of the crowbar.
B As close to the rock (load) as possible.
C As close to his hands (effort) as possible.
D he position of the fulcrum does not change the effort needed.

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