CameraIcon
CameraIcon
SearchIcon
MyQuestionIcon


Question

A body of mass 2 kg is being dragged with uniform velocity of 2 m/s on a rough horizontal plane. The coefficient of friction between the body and the surface is 0.20. The amount of heat generated in 5 sec is (J =4.2 joule/cal and g=9.8 m/s2)



Correct Answer
A

9.33 cal

Your Answer
B

10.21 cal

Your Answer
C

12.67 cal

Your Answer
D

13.34 cal


Solution

The correct option is B

9.33 cal


Workdone=Force×Displacement=μ mg×(v×t)
W=(0.2)×2×9.8×2×5 joule
Heat generation Q=WJ=0.2×2×9.8×2×54.2=9.33 cal

flag
 Suggest corrections
thumbs-up
 
0 Upvotes


Similar questions
View More


People also searched for
View More



footer-image