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Category: Mechanics

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…

A-block-of-mass-0-2kg-rests-on-an-incline-plane-of-30-to-the-horizontal-with-a-velocity-of-12m-s-If-the-coefficient-of-sliding-friction-is-0-16-i-determine-how-far-up-the-plane-the-mass-travels-bef

Question Number 75001 by necxxx last updated on 05/Dec/19 $${A}\:{block}\:{of}\:{mass}\:\mathrm{0}.\mathrm{2}{kg}\:{rests}\:{on}\:{an}\:{incline} \\ $$$${plane}\:{of}\:\mathrm{30}°\:{to}\:{the}\:{horizontal}\:{with}\:{a} \\ $$$${velocity}\:{of}\:\mathrm{12}{m}/{s}.{If}\:{the}\:{coefficient}\:{of} \\ $$$${sliding}\:{friction}\:{is}\:\mathrm{0}.\mathrm{16}, \\ $$$$\left({i}\right){determine}\:{how}\:{far}\:{up}\:{the}\:{plane}\:{the} \\ $$$${mass}\:{travels}\:{before}\:{stoping}. \\ $$$$\left({ii}\right){if}\:{the}\:{block}\:{returns},{what}\:{is}\:{the} \\ $$$${velocity}\:{of}\:{the}\:{block}\:{at}\:{the}\:{bottom}\:{of}\:{the} \\…