The handle of a screw jack is 35 cm long and pitch of the screw is 0.5 cm. What force must be applied at the end of the handle to lift a load of 2000N, if the efficiency of the jack is 30% [π = 22/7]?

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The handle of a screw jack is 35 cm long and pitch of the screw is 0.5 cm. What force ...

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Correct Answer: C

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