Question Number 50914 by peter frank last updated on 22/Dec/18 $${prove}\:{that}\:{relative}\:{velocity} \\ $$$${is}\:{reversed}\:{by}\:{a}\:{head}\:{on} \\ $$$${collision} \\ $$ Answered by tanmay.chaudhury50@gmail.com last updated on 22/Dec/18 $${for}\:{collission}\:\:{velocity}\:{are}\:\overset{\rightarrow}…
Question Number 50913 by peter frank last updated on 22/Dec/18 $${A}\:{ball}\:{is}\:{dropped}\:{from} \\ $$$${height}\:{h}.{it}\:{strikes}\:{the}\:{ground} \\ $$$${and}\:{rises},{the}\:{coefficiate} \\ $$$${of}\:{restitution}\:{being}\:\:{e} \\ $$$${what}\:{is}\:{the}\:{total}\:{distance} \\ $$$${it}\:{moves}\:\:{and}\:\:{the}\:{time}\: \\ $$$${before}\:{it}\:{comes}\:{to}\:{rest}? \\ $$$$…
Question Number 50912 by peter frank last updated on 22/Dec/18 $${Show}\:{that}\:{in}\:{collision} \\ $$$${where}\:{kinetic}\:{energy}\:{is} \\ $$$${conserved}\:{linear}\:{momemtum} \\ $$$${is}\:{also}\:{conserved} \\ $$ Answered by tanmay.chaudhury50@gmail.com last updated on…
Question Number 116355 by Rio Michael last updated on 03/Oct/20 $$\mathrm{the}\:\mathrm{speed}\:{v}\:\mathrm{of}\:\mathrm{a}\:\mathrm{projectile}\:\mathrm{launched}\:\mathrm{at} \\ $$$$\mathrm{an}\:\mathrm{angle}\:\alpha\:\mathrm{to}\:\mathrm{the}\:\mathrm{horizontal}\:\mathrm{is}\:\mathrm{thought}\:\mathrm{to} \\ $$$$\mathrm{be}\:\mathrm{given}\:\mathrm{by}\:: \\ $$$$\:\:\:\:\:\:\:{v}\:=\:\left[\frac{\mathrm{1}}{{k}}\left({A}\:+\:\frac{\mathrm{sin}\:\alpha{t}}{\mathrm{g}}\right)\:+\:{e}^{−{C}/{t}} \right] \\ $$$$\mathrm{where}\:{k},{A},\:\:\alpha\:\mathrm{and}\:{C}\:\mathrm{are}\:\mathrm{constants},\:{t}\:\mathrm{is}\:\mathrm{time} \\ $$$$\mathrm{and}\:\mathrm{g}\:\mathrm{is}\:\mathrm{the}\:\mathrm{gravitational}\:\mathrm{acceleration}. \\ $$$$\mathrm{determine}\:\mathrm{the}\:\mathrm{base}\:\mathrm{units}\:\mathrm{of}\:{A},\:\alpha\:\mathrm{and}\:{C} \\…
Question Number 116338 by Dwaipayan Shikari last updated on 03/Oct/20 Commented by Dwaipayan Shikari last updated on 03/Oct/20 $$\mathrm{Two}\:\mathrm{thin}\:\mathrm{circular}\:\mathrm{discs}\:\mathrm{of}\:\mathrm{mass}\:\mathrm{m}\:\mathrm{and}\:\mathrm{4m}\:,\mathrm{having}\:\mathrm{Radii}\:\mathrm{a}\:\mathrm{and}\:\mathrm{2a} \\ $$$$\mathrm{respectively},\mathrm{are}\:\mathrm{rigidly}\:\mathrm{fixed}\:\mathrm{by}\:\mathrm{massless},\:\mathrm{rigid}\:\mathrm{rod}\:\mathrm{of}\:\mathrm{length} \\ $$$$\mathrm{l}=\sqrt{\mathrm{24}}\mathrm{a},\mathrm{through}\:\mathrm{their}\:\mathrm{centres},\:\mathrm{tbis}\:\mathrm{assembly}\:\mathrm{is}\:\mathrm{laid}\:\mathrm{on}\:\mathrm{a}\:\mathrm{firm}\:\mathrm{and}\:\mathrm{flat} \\ $$$$\mathrm{surface},\mathrm{and}\:\mathrm{set}\:\mathrm{rolling}\:\mathrm{without}\:\mathrm{slipping}\:\mathrm{on}\:\mathrm{the}\:\mathrm{surface}\:\mathrm{so}\:\mathrm{that}…
Question Number 181522 by mr W last updated on 26/Nov/22 Commented by mr W last updated on 26/Nov/22 $${two}\:{objects}\:{are}\:{fired}\:{at}\:{the}\:{same}\:{time} \\ $$$${from}\:{point}\:{A}\:{and}\:{point}\:{B}\:{as}\:{shown}. \\ $$$${what}\:{is}\:{the}\:{smallest}\:{distance}\: \\ $$$${between}\:{them}\:{after}\:{which}\:{time}?…
Question Number 50450 by JDlix last updated on 16/Dec/18 $${how}\:{many}\:{trips}\:{can}\:{a}\:{bird}\:{moving}\:{in}\:\mathrm{120}{m}/{s}\:{make} \\ $$$${between}\:{two}\:{trains}\:{which}\:{are}\:{initially}\:\mathrm{120}{m}\:{apart}\:{and} \\ $$$${moving}\:{in}\:\mathrm{60}{m}/{s}\:{to}\:{each}\:{other}? \\ $$$$ \\ $$ Terms of Service Privacy Policy Contact: info@tinkutara.com
Question Number 50330 by peter frank last updated on 15/Dec/18 Commented by peter frank last updated on 15/Dec/18 Answered by mr W last updated on…
Question Number 181296 by yaslm last updated on 23/Nov/22 Answered by mr W last updated on 23/Nov/22 $${F}_{{GC}} =\mathrm{0} \\ $$$${F}_{{BG}} ×\frac{\mathrm{3}}{\mathrm{5}}=\mathrm{400}−\mathrm{200}=\mathrm{200} \\ $$$$\Rightarrow{F}_{{BG}} =\frac{\mathrm{1000}}{\mathrm{3}}…
Question Number 50101 by ajfour last updated on 13/Dec/18 Commented by ajfour last updated on 14/Dec/18 $${If}\:{system}\:{of}\:{ring}\:{and}\:{block}\:{be} \\ $$$${released}\:{as}\:{shown},\:{and}\:{later}\:{the} \\ $$$${ring}\:{hits}\:{the}\:{block}\:{as}\:{shown}\:{in} \\ $$$${dashed}\:{lines},\:{determine}\:\boldsymbol{{a}}. \\ $$$${Find}\:{also}\:{the}\:{velocity}\:{of}\:{ring}\:{then}.…