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Category: Mechanics

Question-215256

Question Number 215256 by ajfour last updated on 01/Jan/25 Commented by ajfour last updated on 01/Jan/25 $${After}\:{this}\:{elastic}\:{collision}\:{on}\:{a}\:{flat} \\ $$$${frictionless}\:{surface}\:{Find}\:{after}\:{what} \\ $$$${time}\:{at}\:{what}\:{y}\:{coordinate}\:{does}\:{point} \\ $$$${A}\:{cross}\:{the}\:{y}-{axis}. \\ $$…

Question-215126

Question Number 215126 by mr W last updated on 29/Dec/24 Commented by Ghisom last updated on 29/Dec/24 $${L}\:\mathrm{must}\:\mathrm{be}\:\mathrm{horizontal}\:\mathrm{for}\:{r}\:\rightarrow\:\mathrm{max} \\ $$$$\mathrm{or}\:\mathrm{am}\:\mathrm{I}\:\mathrm{missing}\:\mathrm{something}? \\ $$ Commented by mr…

Question-214815

Question Number 214815 by mr W last updated on 20/Dec/24 Commented by mr W last updated on 20/Dec/24 $${a}\:{solid}\:{ball}\:{with}\:{mass}\:\boldsymbol{{m}}\:{and}\:{radius}\:\boldsymbol{{r}} \\ $$$${is}\:{released}\:{from}\:{the}\:{top}\:{of}\:{a} \\ $$$${quarter}−{cylindrical}\:{wedge}\:{with} \\ $$$${mass}\:\boldsymbol{{M}}\:{and}\:{radius}\:\boldsymbol{{R}}\:{as}\:{shown}.…