@randomaccount43543 to xkcdEnglish • 1 month agoxkcd #2935: Ocean Loopimgs.xkcd.comimagemessage-square23arrow-up1602arrow-down113file-text
arrow-up1589arrow-down1imagexkcd #2935: Ocean Loopimgs.xkcd.com@randomaccount43543 to xkcdEnglish • 1 month agomessage-square23file-text
https://xkcd.com/2935 Alt text: I can’t believe they wouldn’t even let me hold a vote among the passengers about whether to try the loop.
minus-square@[email protected]linkfedilinkEnglish1•29 days agoso mass doesn’t factor into the equation??? a Jetski made from aluminum would need the same speed as from osmium?
minus-square@[email protected]linkfedilinkEnglish1•29 days agoI think so. At the apex of the loop gravity balances centrifugal force, Fg = Fc, when going the minimal speed necessary to get through the loop. Fg = m g, Fc = m v^2 / r. So mass m drops out of the equation.
so mass doesn’t factor into the equation??? a Jetski made from aluminum would need the same speed as from osmium?
I think so. At the apex of the loop gravity balances centrifugal force, Fg = Fc, when going the minimal speed necessary to get through the loop. Fg = m g, Fc = m v^2 / r. So mass m drops out of the equation.