(2) A block and tackle system of pulleys is used to raise a load of...
(2) A block and tackle system of pulleys is used to raise a load of...
(2) A block and tackle system of pulleys is used to raise a load of 500N steadily through a height of 20m. the work done against friction is then 1900J. Calculate
(1) work done by the effort
(2)the Efficiency of the system
(3)the effort applied?
InPhysics
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Asked by Annie on 17th September, 2020
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