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Category: Mechanics

Question-167078

Question Number 167078 by peter frank last updated on 05/Mar/22 Commented by mr W last updated on 07/Mar/22 $${something}\:{is}\:{tatally}\:{wrong}. \\ $$$${if}\:{the}\:{satellite}\:{is}\:{just}\:{launched}\:{into} \\ $$$${a}\:{small}\:{height},\:{say}\:{H}\approx\mathrm{0},\:{you}\:{need} \\ $$$${infinite}\:{enegy}:\:\frac{{mgR}}{\mathrm{2}}\left(\mathrm{1}+\frac{{R}}{\mathrm{0}}\right)\rightarrow\infty.…

Question-101051

Question Number 101051 by aurpeyz last updated on 30/Jun/20 Commented by Dwaipayan Shikari last updated on 30/Jun/20 $${Initial}\:{K}.\:{E}=\:{P}.{E}\:+\:{work}\:\:{done}\:{by}\:{frictional}\:{force} \\ $$$$\:\:\frac{\mathrm{1}}{\mathrm{2}}{mv}^{\mathrm{2}} ={mgdsin}\mathrm{30}°+{f}.{d} \\ $$$$\:\:{d}=\frac{\mathrm{90}}{\mathrm{29}.\mathrm{5}}=\mathrm{3}.\mathrm{05}\:{metre} \\ $$…

while-proving-F-ma-newtons-2nd-law-we-put-F-1-when-m-1-and-a-1-and-thus-k-1-why-not-F-other-value-except-1-

Question Number 35474 by tanmay.chaudhury50@gmail.com last updated on 19/May/18 $${while}\:{proving}\:{F}={ma}\:{newtons}\:\mathrm{2}{nd}\:{law}\:{we}\:{put} \\ $$$${F}=\mathrm{1}\:{when}\:{m}=\mathrm{1}\:{and}\:{a}=\mathrm{1}\:{and}\:{thus}\:{k}=\mathrm{1} \\ $$$${why}\:{not}\:{F}={other}\:{value}\:{except}\:\mathrm{1}… \\ $$ Terms of Service Privacy Policy Contact: info@tinkutara.com

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}}…