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Statement of a problem № 2530

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A hoisting machine lifts a 3000-kg load a height of 8.00 m in a time of 20.0 s. The power supplied to the engine is 18.0 hp. Compute (a) the work output, (b) the power output and power input, and (c) the efficiency of the engine and hoist system.

Solution:
A hoisting machine lifts a 3000-kg load a height of 8.00 m in a time of 20.0 s.

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