A particle of mass m is driven by a machine that delivers a constant power k watts. If the particle starts from rest the force on the particle at time t is:

Question

A particle of mass m is driven by a machine that delivers a constant power k watts. If the particle starts from rest the force on the particle at time t is:, m k 2 t − 1 2, m k t - 1 2, 2 m k t - 1 2, 1 2 m k t - 1 2

MARKS App · Accepted Answer

F v = c o n s t a n t = k m d v d t v = k ∫ v d v = ∫ k m d t v 2 2 = k m t v = 2 k m t F = m d v d t = m 2 k m 1 2 t - 1 2 = m k 2 t - 1 2

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