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Category: Mechanics

Question-35258

Question Number 35258 by Tinkutara last updated on 17/May/18 Answered by ajfour last updated on 17/May/18 $${I}_{{PQ}} =\frac{{MR}^{\mathrm{2}} }{\mathrm{4}}+{M}\left(\frac{{R}}{\mathrm{4}}\right)^{\mathrm{2}} +{M}\left(\frac{\mathrm{5}{R}}{\mathrm{4}}\right)^{\mathrm{2}} \\ $$$$\:\:\:\:\:\:\:=\frac{\mathrm{15}}{\mathrm{8}}{MR}^{\mathrm{2}} \\ $$$$\frac{\mathrm{1}}{\mathrm{2}}\left(\frac{\mathrm{15}}{\mathrm{8}}{MR}^{\mathrm{2}} \right)\left(\frac{{v}}{\mathrm{5}{R}/\mathrm{4}}\right)^{\mathrm{2}}…

Question-34781

Question Number 34781 by Tinkutara last updated on 11/May/18 Answered by ajfour last updated on 11/May/18 $$\mathrm{6}{mgx}_{\mathrm{1}} −\mathrm{3}{mgx}_{\mathrm{2}} =\frac{\mathrm{1}}{\mathrm{2}}\left(\mathrm{18}{m}\right){v}^{\mathrm{2}} +\frac{\mathrm{1}}{\mathrm{2}}{kx}^{\mathrm{2}} \\ $$$$\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:…..\left({i}\right) \\ $$$${x}_{\mathrm{1}} −{x}_{\mathrm{2}}…

A-man-pushes-a-box-of-40kg-up-an-incline-of-15-if-the-man-applies-a-horizontal-force-200N-and-the-box-moves-up-the-plane-a-distance-of-20m-at-a-constant-velocity-and-the-coefficient-of-friction-is-0-

Question Number 34703 by NECx last updated on 10/May/18 $${A}\:{man}\:{pushes}\:{a}\:{box}\:{of}\:\mathrm{40}{kg}\:{up}\:{an} \\ $$$${incline}\:{of}\:\mathrm{15}°,{if}\:{the}\:{man}\:{applies} \\ $$$${a}\:{horizontal}\:{force}\:\mathrm{200}{N}\:{and}\:{the} \\ $$$${box}\:{moves}\:{up}\:{the}\:{plane}\:{a}\:{distance} \\ $$$${of}\:\mathrm{20}{m}\:{at}\:{a}\:{constant}\:{velocity}\:{and} \\ $$$${the}\:{coefficient}\:{of}\:{friction}\:{is}\:\mathrm{0}.\mathrm{1}, \\ $$$${find}\: \\ $$$$\left.{a}\right){the}\:{workdone}\:{by}\:{the}\:{man}\:{on}\:{the} \\…