Questions
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
detailed solution
Correct option is A
Workdone = Force × Displacement =μmg×(u×t)W=(0.2)×2×9.8×2×5 joule Heat generated Q=WJ=0.2×2×9.8×2×54.2=9.33calTalk to our academic expert!
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The work done in moving a body of mass 4 kg with uniform velocity of 5 for 10 seconds on a surface of = 0.4 is (take g = 9.8 )
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