Two identical motors

PHYSICS · Subjective · A Level · Physics · Mechanics and materials · Mechanics and materials

Problem

Two identical motors, each rated at

2\,\text{kW}

, pull separate trolleys on the same track. (i) Trolley A moves at a constant speed of

4\,\text{m/s}

. (ii) Trolley B moves at a constant speed of

2\,\text{m/s}

. (a) Calculate the pulling force on Trolley A. (b) Calculate the pulling force on Trolley B. (c) Which trolley experiences the greater force and by what factor?

Related theory

Power
Work, Energy and Power

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