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Deepak Raj Grade: 11
        

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?

6 years ago

Answers : (1)

vikas askiitian expert
510 Points
										

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

6 years ago
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