# Find the work done in pulling a body of mass 5kg alone an incline plne angle 60• with the coefficient of friction 0.2 through 2m

Force of friction is down the incline

Workdone by friction is Wf = [email protected] = -10

One component of weight is acting along incline downwards

Wmg = [email protected] s= – 50sqrt3

Net workdone = Change in kinetic energy

Wmg + Wf + W =0

W = -(Wmg + Wf)

W = ( 10 + 50 sqrt(3))

W = 96.5 J