AIPMT | 2015Work, Power and EnergyHard
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 :
Options
A.
B.
C.
D.
Solution
P = Fv = mav
⇒ K = mv =
By integrating the equation
⇒ ∫ v dv =
⇒
a =
F = ma = m
⇒ F = 
Hence option (4
⇒ K = mv =
By integrating the equation
⇒ ∫ v dv =
⇒
a =
F = ma = m
⇒ F = Hence option (4
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