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Category: Mechanics

Question-143868

Question Number 143868 by ajfour last updated on 19/Jun/21 Commented by ajfour last updated on 19/Jun/21 $${Find}\:{minimum}\:{h}\:{such}\:{that} \\ $$$${stick}\:{just}\:{loses}\:{contact}\:{with} \\ $$$${table}\:{upon}\:{being}\:{hit}\:{by}\:{a}\:{small} \\ $$$${ball}\:{of}\:{mass}\:{m}\:{released}\:{a} \\ $$$${height}\:{h}\:{above}\:{the}\:{table}\:{top}…

Question-143666

Question Number 143666 by ajfour last updated on 16/Jun/21 Commented by ajfour last updated on 19/Jun/21 $${If}\:{the}\:{upper}\:{disc}\:{is}\:{released} \\ $$$${at}\:{angle}\:\alpha,\:{find}\:\alpha\:{such}\:{that} \\ $$$${disc}\:{loses}\:{contact}\:{with} \\ $$$${the}\:{fixed}\:{hemisphere}\:{just} \\ $$$${when}\:{it}\:{hits}\:{the}\:{ground}.…

Show-that-the-capacitance-of-two-concentric-sphere-that-have-a-and-b-as-respective-radii-of-the-inner-and-outer-sphere-is-4pi-o-ab-b-a-

Question Number 77889 by peter frank last updated on 11/Jan/20 $${Show}\:{that}\:{the}\:{capacitance} \\ $$$${of}\:{two}\:{concentric}\:{sphere} \\ $$$${that}\:{have}\:{a}\:{and}\:{b}\:{as} \\ $$$${respective}\:{radii}\:{of}\:{the} \\ $$$${inner}\:{and}\:{outer}\:{sphere} \\ $$$${is}\:\frac{\mathrm{4}\pi\in_{{o}} {ab}}{{b}−{a}} \\ $$ Commented…

Question-142361

Question Number 142361 by BHOOPENDRA last updated on 30/May/21 Answered by mr W last updated on 30/May/21 $$\delta=\mathrm{0}.\mathrm{2}{m} \\ $$$${l}=\mathrm{4}.\mathrm{8}+\mathrm{0}.\mathrm{2}=\mathrm{5}{m} \\ $$$${a}=\mathrm{1}{m} \\ $$$${mgl}\mathrm{sin}\:\theta−\mu{mg}\mathrm{cos}\:\theta{l}=\frac{\mathrm{1}}{\mathrm{2}}{k}\delta^{\mathrm{2}} ={mga}\mathrm{sin}\:\theta+\mu{mg}\mathrm{cos}\:\theta{a}…

solve-complex-integral-e-it-1-t-2-dt-plz-help-me-T-T-my-handsome-brothers-and-sisters-

Question Number 75741 by Gazella thomsonii last updated on 16/Dec/19 $$\mathrm{solve}\:\mathrm{complex}\:\mathrm{integral} \\ $$$$\int_{−\infty} ^{+\infty} \:\frac{{e}^{\boldsymbol{{i}}{t}} }{\:\sqrt{\mathrm{1}+{t}^{\mathrm{2}} }}\mathrm{d}{t}=???? \\ $$$$\mathrm{plz}…….\mathrm{help}\:\mathrm{me}…\mathrm{T}\frown\mathrm{T}\:\:\: \\ $$$$\mathrm{my}\:\mathrm{handsome}\:\mathrm{brothers}\:\mathrm{and}\:\mathrm{sisters}… \\ $$ Terms of…