Answer to Question #311908 in Mechanics | Relativity for Sule

Question #311908

A box of mass 500kg is druged along a level ground at a speed of 12metres per second.if the force of friction between the box and the floor is 1200newtons .calculate the power developed?


1
Expert's answer
2022-03-18T09:16:16-0400

Explanations & Calculations


  • Since the force needed to move the box is the same as the magnitude of the friction force under a uniform speed, the power which is given by "\\small P= F.v" can be easily evaluated.

"\\qquad\\qquad\n\\begin{aligned}\n\\small P&=\\small 1200\\,N\\times12\\,ms^{-1}=14400\\,W\n\\end{aligned}"


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