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 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 Number 214928 by ajfour last updated on 24/Dec/24 Commented by ajfour last updated on 24/Dec/24 https://youtu.be/_ME_QSE6MIo?si=JxKs4xa21FSBKJSp Do you think the analysis is all correct here? Commented by mr W last updated on 24/Dec/24…
Question Number 214815 by mr W last updated on 20/Dec/24 Commented by mr W last updated on 20/Dec/24 $${a}\:{solid}\:{ball}\:{with}\:{mass}\:\boldsymbol{{m}}\:{and}\:{radius}\:\boldsymbol{{r}} \\ $$$${is}\:{released}\:{from}\:{the}\:{top}\:{of}\:{a} \\ $$$${quarter}−{cylindrical}\:{wedge}\:{with} \\ $$$${mass}\:\boldsymbol{{M}}\:{and}\:{radius}\:\boldsymbol{{R}}\:{as}\:{shown}.…
Question Number 214722 by mr W last updated on 18/Dec/24 Commented by mr W last updated on 18/Dec/24 $${three}\:{identical}\:{cylinders}\:{are}\: \\ $$$${released}\:{from}\:{the}\:{state}\:{as}\:{shown}. \\ $$$${there}\:{is}\:{no}\:{friction}\:{anywhere}. \\ $$$${find}\:…
Question Number 214656 by mr W last updated on 15/Dec/24 Commented by mr W last updated on 17/Dec/24 $${same}\:{conditions}\:{as}\:{in}\:{Q}\mathrm{214449} \\ $$$${find}\:{the}\:{final}\:{speed}\:{of}\:{the}\:{lower} \\ $$$${cylinder}. \\ $$…
Question Number 214578 by ajfour last updated on 12/Dec/24 Commented by ajfour last updated on 12/Dec/24 $${If}\:{released}\:{as}\:{shown},\:{after}\:{what}\:{time} \\ $$$${does}\:{the}\:{other}\:{end}\:{of}\:{seesaw}\:{hits} \\ $$$${the}\:{ground}.\:\left({b}>{a}\right) \\ $$ Answered by…
Question Number 214449 by ajfour last updated on 08/Dec/24 Commented by ajfour last updated on 09/Dec/24 https://youtu.be/mVW8FiNpKjk?si=q68kdETxCuqwyZ3- Answered by mr W last updated on 14/Dec/24…
Question Number 214398 by mr W last updated on 07/Dec/24 Commented by mr W last updated on 07/Dec/24 $${find}\:{acceleration}\:{of}\:{wedge}\:{A}=? \\ $$$${cylinder}\:{with}\:{mass}\:{m}\:{and}\:{radius}\:{r}\: \\ $$$${rolls}\:{along}\:{the}\:{wedge}\:{with}\:{mass}\:{M}. \\ $$…
Question Number 214395 by mr W last updated on 07/Dec/24 Commented by mr W last updated on 07/Dec/24 $${find}\:{acceleration}\:{of}\:{wedge}\:{A}=? \\ $$ Answered by mr W…