Category: Mechanics

Question Number 129542 by mr W last updated on 16/Jan/21 Commented by mr W last updated on 16/Jan/21 $${when}\:{the}\:{man}\:{climbs}\:{the}\:{ladder}\:{from} \\ $$$${bottom}\:{to}\:{top},\:{how}\:{much}\:{does}\:{the} \\ $$$${block}\:{move}\:{and}\:{in}\:{which}\:{direction}? \\ $$…

Question Number 63588 by ajfour last updated on 05/Jul/19 Commented by ajfour last updated on 05/Jul/19 $${If}\:{released}\:{as}\:{shown},\:{find}\:{time} \\ $$$${taken}\:{by}\:{the}\:{small}\:{block}\:{to}\:{slide} \\ $$$${down}\:{the}\:{frictionless}\:{track}\:{till}\:{O}. \\ $$ Answered by…

Question Number 63073 by ajfour last updated on 28/Jun/19 Commented by ajfour last updated on 28/Jun/19 $${Find}\:{x}_{{min}} \:. \\ $$ Answered by mr W last…

Question Number 62800 by ajfour last updated on 25/Jun/19 Commented by ajfour last updated on 25/Jun/19 $${If}\:{smaller}\:{ball}\:\left({solid}\right)\:{dropped} \\ $$$${over}\:{the}\:{bigger}\:{as}\:{shown},\:{find} \\ $$$$\boldsymbol{{u}}\:{immediately}\:{after}\:{collision}. \\ $$$$\left({assume}\:{frictionless}\:{surface},\right. \\ $$$${but}\:{with}\:{coefficient}\:{of}\:{restitu}-…

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}.…