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Category: Mechanics

Question-127997

Question Number 127997 by mr W last updated on 05/Jan/21 Commented by mr W last updated on 05/Jan/21 $${a}\:{paraboloid}\:{bowl}\:{has}\:{a}\:{depth}\:{of}\:{H} \\ $$$${and}\:{an}\:{opening}\:{with}\:{diameter}\:{L}. \\ $$$${a}\:{small}\:{block}\:{of}\:{mass}\:{m}\:{is}\:{released} \\ $$$${from}\:{rest}\:{at}\:{the}\:{rim}\:{of}\:{the}\:{bowl}.…

Question-127811

Question Number 127811 by mr W last updated on 02/Jan/21 Commented by mr W last updated on 02/Jan/21 $${a}\:{paraboloid}\:{bowl}\:{has}\:{a}\:{depth}\:{of}\:{H} \\ $$$${and}\:{an}\:{opening}\:{with}\:{diameter}\:{L}. \\ $$$${a}\:{small}\:{ball}\:{of}\:{mass}\:{m}\:{is}\:{released} \\ $$$${from}\:{rest}\:{at}\:{the}\:{rim}\:{of}\:{the}\:{bowl}.…

a-player-kicked-a-football-at-angel-30-with-the-ground-towards-an-empty-goal-post-of-hegith-3-4m-the-ball-hits-the-crossbar-of-the-goal-post-30m-away-from-where-the-ball-was-kicked-Take-g-9-8m-s-Fi

Question Number 61867 by readone97 last updated on 10/Jun/19 $$\:{a}\:{player}\:{kicked}\:{a}\:{football}\:{at}\:{angel}\:\mathrm{30}\:{with}\:{the}\:{ground}\:{towards}\:{an}\:{empty}\:{goal}\:{post}\:{of}\:{hegith}\:\mathrm{3}.\mathrm{4}{m}\:{the}\:{ball}\:{hits}\:{the}\:{crossbar}\:{of}\:{the}\:{goal}\:{post}\:\mathrm{30}{m}\:{away}\:{from}\:{where}\:{the}\:{ball}\:{was}\:{kicked}.\:{Take}\:{g}=\mathrm{9}.\mathrm{8}{m}/{s}.\:{Find}\:{the}\:{intial}\:{velocity}\:{u}\:{of}\:{the}\:{ball}?.{What}\:{is}\:{time}\:{taken}\:{for}\:{the}\:{ball}\:{to}\:{hit}\:{the}\:{crossbar}? \\ $$ Terms of Service Privacy Policy Contact: info@tinkutara.com

A-cubical-block-of-ice-of-mass-m-and-edge-L-is-placed-in-a-large-tray-of-mass-M-If-the-ice-block-melts-how-far-does-the-centre-of-mass-of-the-system-ice-tray-come-down-a-ml-m-M-b-2ml-

Question Number 61205 by necx1 last updated on 30/May/19 $${A}\:{cubical}\:{block}\:{of}\:{ice}\:{of}\:{mass}\:{m}\:{and} \\ $$$${edge}\:{L}\:{is}\:{placed}\:{in}\:{a}\:{large}\:{tray}\:{of}\:{mass} \\ $$$${M}.{If}\:{the}\:{ice}\:{block}\:{melts},{how}\:{far}\:{does} \\ $$$${the}\:{centre}\:{of}\:{mass}\:{of}\:{the}\:{system}\:“{ice}\:+\:{tray}'' \\ $$$${come}\:{down}\:? \\ $$$$ \\ $$$$\left.{a}\left.\right)\left.\frac{{ml}}{{m}+{M}}\left.\:\:{b}\right)\frac{\mathrm{2}{ml}}{{m}+{M}}\:\:{c}\right)\frac{{ml}}{\mathrm{2}\left({m}+{M}\right)}\:\:{d}\right){none} \\ $$ Commented…