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The work done in pulling body of mass 5kg along a inclined plane(angle 60 degree) with coefficient of friction 0.2 through 2 merter will be?

The work done in pulling body of mass 5kg along a inclined plane(angle 60 degree) with coefficient of friction 0.2 through 2 merter will be?

Grade:11

1 Answers

vikas askiitian expert
509 Points
10 years ago

force of friction is down the incline

f=umgcos@

workdone by friction is Wf =umgcos@ds=-10

one component of weight is acting along incline downwards

Wmg = mgsin@ds=-50sqrt3

net workdone =change in kinetic energy

Wmg + Wf +W =0

 W   =  -(Wmg + Wf)

  W =   (10+50sqrt3 )

  W= 96.5 J

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