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A-block-pulled-along-a-horizontal-floo-by-a-horizontal-rope-The-tension-in-the-rope-is-500N-and-the-blocks-moves-at-a-constant-speed-of-2-75ms-1-Find-the-work-done-by-the-tension-in-40s-and-also




Question Number 25600 by Mcfaithal last updated on 11/Dec/17
A block pulled along a horizontal floo  by a horizontal rope.  The tension in the rope is 500N and the  blocks moves at a constant speed of 2.75ms^(−1.)   Find the work done by the tension in 40s  and also find the power applied by the tension.  GUYS PLS HELP
$$\mathrm{A}\:\mathrm{block}\:\mathrm{pulled}\:\mathrm{along}\:\mathrm{a}\:\mathrm{horizontal}\:\mathrm{floo} \\ $$$$\mathrm{by}\:\mathrm{a}\:\mathrm{horizontal}\:\mathrm{rope}. \\ $$$$\mathrm{The}\:\mathrm{tension}\:\mathrm{in}\:\mathrm{the}\:\mathrm{rope}\:\mathrm{is}\:\mathrm{500N}\:\mathrm{and}\:\mathrm{the} \\ $$$$\mathrm{blocks}\:\mathrm{moves}\:\mathrm{at}\:\mathrm{a}\:\mathrm{constant}\:\mathrm{speed}\:\mathrm{of}\:\mathrm{2}.\mathrm{75ms}^{−\mathrm{1}.} \\ $$$$\mathrm{Find}\:\mathrm{the}\:\mathrm{work}\:\mathrm{done}\:\mathrm{by}\:\mathrm{the}\:\mathrm{tension}\:\mathrm{in}\:\mathrm{40s} \\ $$$$\mathrm{and}\:\mathrm{also}\:\mathrm{find}\:\mathrm{the}\:\mathrm{power}\:\mathrm{applied}\:\mathrm{by}\:\mathrm{the}\:\mathrm{tension}. \\ $$$$\mathrm{GUYS}\:\mathrm{PLS}\:\mathrm{HELP} \\ $$
Answered by jota@ last updated on 12/Dec/17
W=Fs=Fvt=(500)(2.75)(40) J  P=W/t=500×2.75 W
$${W}={Fs}={Fvt}=\left(\mathrm{500}\right)\left(\mathrm{2}.\mathrm{75}\right)\left(\mathrm{40}\right)\:{J} \\ $$$${P}={W}/{t}=\mathrm{500}×\mathrm{2}.\mathrm{75}\:{W} \\ $$

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