Recent content by km41

Tiny- tim, Thank you so much for your help I solved the rest of it and I got it. Thanks!

Ok nevermind I got it. m2gh= m1gh + .5 (m1(vsq) + m2 (vsq) + .5m(vsq))

In the Initial or Final or Both? I'm not even sure how to do that??

How is the gh wrong? Isn't it 30 x 9.8 x 2 (Mass 2 x gravity x height from the ledge)

ω = v/r So.. 0 + 0 + m2gh= m1gh+ 1/2(m1 x ( v squared) + m2 x ( v squared) + I x (ω squared) 30 x 9.8 x 2 = 0 + 1/2 ( 20 x v squared + 30 x v squared + I (v/r)squared

What I meant to say was KER was 0. Sorry about that, I'm just flustered. 0 + 0 + m2gh= m1gh+ 1/2(m1 x (v squared) + m2 x (v squared) + I x (Omega squared)) ??

Homework Statement There is a system consisting of two masses, m1=20 kg, m2=30kg on a pulley and m2 is 2 meters above the ground, while m1 is on the ground. This is the question: the system released from rest a 30 kg block that is 2m above a ledge. The pulley is a disk with radius of 10 cm...