- #1

chrisfnet

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## Homework Statement

http://img688.imageshack.us/img688/5277/loopb.jpg

A cylindrical shell is released from rest and rolls down an incline without slipping. Find speed of shell at the top of the loop.

h(incline) = 2.0m

h(loop) = 1.3m

## The Attempt at a Solution

vf = sqrt(g * yi)

vf = sqrt(9.8m/s^2 * 2.0m)

vf = 4.42719m/s = vi(loop)

KEi = PEf + KEf

1/2mvi^2 = mgy + 1/2mvf^2 + 1/2mr^2(v^2/r^2)

1/2vi^2 = gy + 1/2vf^2 + 1/2vf^2

1/2(4.42719m/s)^2 = -9.8m/s^2(1.3m) + 1/2vf^2 + 1/2vf^2

vf = 1.71464m/s

Would this be correct?

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