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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?

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?

Grade:10

2 Answers

AKASH GOYAL AskiitiansExpert-IITD
419 Points
11 years ago

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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vikas askiitian expert
509 Points
11 years ago

force =100N

workdone by friction = f.s = force*displacement

                             =100*30 =3*103 J

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

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