Find the time required to lift the piano from the street

Reference no: EM13717049

Solve the given problem:

Problem: A 3.70-kN piano is lifted by three workers at a constant speed to an apartment 26.7 m above the street using a pulley system fastened to the roof of the building. Each worker is able to deliver 149 W of power, and the pulley system is 75.0% efficient (so that 25.0% of the mechanical energy is lost due to friction in the pulley).

Part A: Neglecting the mass of the pulley, find the time required to lift the piano from the street to the apartment.

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I need help to find the time required to lift the piano from the street to the apartment.

Reference no: EM13717049

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