H2P-44
Power and velocity (P = Fv)
H2 Physics · JC 1 · Easy · Power and velocity (P = Fv)
A crane lifts a 250 kg load vertically at a constant speed of 0.80 m s⁻¹. Take g = 9.81 m s⁻². What is the useful power output of the motor?
- 2.0 × 10³ W
- 3.1 × 10³ W
- 1.2 × 10³ W
- 3.1 × 10² W
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