A-LevelPhysicsWork, energy and power9702/12 · Oct/Nov 2022 · Q171 Mark
A motor is used to lift a load vertically upwards. The load has weight W. The motor produces useful power output P. The load is lifted at constant velocity v. Which expression gives the time taken for the motor to lift the load vertically upwards through a distance d?
AP/(Wd)
BWv/P
CWd/P
DPv/W
✓ Correct answer
C: Wd/P
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