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Vishnu Saran Grade: 10
        

A body of mass 2kg moves 30m aginst a frictional force of 100N. If the work is completely converted into heat, the amount of heat expressed in joules will be?

6 years ago

Answers : (2)

AKASH GOYAL AskiitiansExpert-IITD
419 Points
										

Dear Vishnu


The work done against friction will be  converted into heat


Work done against friction=100 x 30 = 3000 J


Heat=3000 J Answer


 


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AKASH GOYAL


AskiitiansExpert-IIT Delhi


 


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6 years ago
vikas askiitian expert
510 Points
										

force =100N


workdone by friction = f.s = force*displacement


                             =100*30 =3*103 J


this is the energy which is converted to heat ...

6 years ago
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