A block and tackle system of 5 pulley is used to raise a load of 500N steady through a height of 20m the work done against friction is then 2000J. Calculate the work done By effort, efficiency and effort applied

Question

A block and tackle system of 5 pulley is used to raise  a load of 500N steady through a height of 20m the work done against friction is then 2000J.  Calculate the work done By effort,  efficiency and effort applied

Yahya Shekha · Accepted Answer

Work done by the effort is 12,000J . The efficiency is 83.3%. The effort applied is 120.

Ms. Sue · Answer

Your School Subject is probably Physics.

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Iris · Answer

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