A constant force of 9 kN parallel to an inclined plane, moves a body of weight 20 kN through a distance of 40m along a plane at a constant speed. The body gains 12 m height..(adsbygoogle = window.adsbygoogle || []).push({});

HOW MUCH WORK IS DISSIPATED AS HEAT?

A/ 120 KJ

B/ 240 KJ

C/ 360 KJ

D/ 600 KJ

So workdone = f x d

but i am a bit confuse as the question say the heat dissipated

so i think that the work done = 20 kN X 12 = 240 KN (heat dissipated) answer

However the work done is 9 KN X 40 = 360 KJ

AM I ON THE RIGHT TRACK ????? HELP BY THE WAY ACCORDING TO ME THE ANSWER IS B

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# Homework Help: Work, energy and power

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