2. A screw jack whose pitch is 4.4mm is used to raise a body of mass 8000kg through a height of 20cm. The length of the tommy bar of the jack is 70cm. if the efficiency of the jack is 80%, calculate;
i. the V.R of the jack ( 1000N)
ii. M.A of the jack (800)
iii. Effort required in raising the body (100N)
iv. Work done by the effort in raising the body (20KJ).
(g = 10ms-2, π = 22/7)?
In Physics
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Asked by vibeslvrd on 5th October, 2020
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