A 2 kg particle moves along the x-axis with speed v = 3x m/s at position x. The net force is F = 4x N. At x = 2 m, if the instantaneous power is N watt, find N.
Physics · Work , Power and Energy · Power
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Question

A 2 kg particle moves along the x-axis with speed v = 3x m/s at position x. The net force is F = 4x N. At x = 2 m, if the instantaneous power is N watt, find N.

G1 Physics · Accepted Answer

At x=2 m, F=8 N and v=6 m/s. Hence P=Fv=8×6=48 W.