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Question

A 5kg mass is lifted 10m at constant speed by a motor. What is the power if it takes 4s? (Take g\=10m/s2)

Options

Choose one · Correct answer highlighted

Explanation

Power P=W/t=F·v per NCERT. Rate of doing work. With given force and velocity, P=Fv. Calculation yields 125 W. Hence option B correctly represents power.

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