Work problem on winding up a cable

mardi 30 juillet 2013

Find the work done in winding up a 300ft cable that weighs 2.00 lb /ft









W=Fd

W=$$\int F dx$$












My attempt



w=F*D

so W= (300ft)(2.00lb/ft)

W=600ft.lb



and





$$\int_0^{300}\!\ 2xdx$$





W=90,000 ft.lb



I'm taking Calc 2 and this is applied Physics problems.



Which of these answers is correct?

And Why?



Thanks in advance

Cheers!






via Physics Forums RSS Feed http://www.physicsforums.com/showthread.php?t=703634&goto=newpost

0 commentaires:

Enregistrer un commentaire