Physics > 2021 > 15
WASSCE
The handle of a screw jack is 35cm long and pitch of the screw is 0.5cm, What force ust be applied at the end of the handle to lift a load of 2000N if the efficiency of the jack is 30%? [take ⊼ = 22/7]
A.
152.0N
B.
132.0N
C.
15.2N
D.
440.0N
Answer: C
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