A man uses a block and tackle mechanism of velocity ratio 6 to lift a car engine smoothly through a height of 1 m in...

A man uses a block and tackle mechanism of velocity ratio 6 to lift a car engine smoothly through a height of 1 m in 5s. The man applies a force of 300N while the mass of the engine is 120 kg. Determine:
(i) The mechanical advantage of the pulley system.
(ii) its efficiency.

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sharon kalunda answered the question on April 2, 2019 at 08:54

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