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Category: Mechanics

Question-129660

Question Number 129660 by ajfour last updated on 17/Jan/21 Commented by ajfour last updated on 17/Jan/21 $${If}\:{a}\:{plank}\:{is}\:{released}\:{in}\:{contact} \\ $$$${with}\:{a}\:{smooth}\:{cylinder}\:{of}\:{radius} \\ $$$${R},\:{at}\:{an}\:{angle}\:\alpha.\:{Find}\:{the}\:{angle} \\ $$$$\theta\:{when}\:{plank}\:{is}\:{about}\:{to}\:{leave} \\ $$$${contact}\:{with}\:{cylinder}.…

Question-63588

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-62800

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}-…