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Introductory Physics Homework Help
Heat energy dissipated from moving box with friction
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[QUOTE="Pete Panopoulos, post: 5000659, member: 541861"] [h2]Homework Statement [/h2] A box of books that weighs 40N is dragged at a speed of 1.5 m/s across a rough floor. If the coefficient of friction between the floor and the box is 0.20, what is the rate at which heat energy is dissipated? [h2]Homework Equations[/h2] Friction: f=μN Work: W=F*d Power: P=W/t [h2]The Attempt at a Solution[/h2] [/B] My assumption would be if the units of power are watts, or kgm[SUP]2[/SUP]/s[SUP]3[/SUP], breaking that up would be : kg*m/s[SUP]2[/SUP]*m/s and the box weighs 40N, so kg*m/s[SUP]2[/SUP]=40, and v=1.5m/s With the coefficient of friction being 0.20, would the answer be 40*1.5*0.2= 12W ? [/QUOTE]
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Heat energy dissipated from moving box with friction
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