The handle of a screw jack is 35 cm long and pitch of the screw
PHYSICS
WAEC 2021
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]?
- A. 152.0N
- B. 132.0N
- C. 15.2N
- D. 440.0N
Correct Answer: C. 15.2N
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