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A body of mass 200 kg is dragged through...

A body of mass 200 kg is dragged through a distance of 8m on a level ground. What is the work done, if the coefficient of friction is 0.25?

A

2520 J

B

3020 J

C

3520 J

D

3920 J

Text Solution

Verified by Experts

The correct Answer is:
D
Work done=`"Force"xx"Distance"=Fs`
In this case, the force is applied to overcome the force of friction (F)
`:." "F=muR=mumg`
`:." "W=mugxxs=0.25xx200xx9.8xx8=3920` joule
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