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The efficiency of the pulley system shown above is 80%. find the effort...

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Question 42

The efficiency of the pulley system shown above is 80%. find the effort E required to lift the load of 1200N

A

275N

B

325N

C

375N

D

573N

Explanation

Share Answer VR = No. of pulleys = 4
Efficiency = ^M.A/_V.R x 100% = load
Effort x 100%_V.R
80 = 1200 x 100 x 1100__Effort4
Effort = 1200 x 100 = 375N_80 x 4

Correct option: C

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