# Homework Help: Inclined plane translational velocity

1. May 5, 2010

### davidelete

1. The problem statement, all variables and given/known data
A hollow cylinder with a mass of 1.2 kilograms and a diameter of .25 m rolls down an inclined plane angled at 35 degrees. What is its translational velocity at the bottom of the incline plane if the distance traveled is 3 meters?

2. Relevant equations
v=$$\sqrt{gh}$$
???

3. The attempt at a solution
sin35=h/3m
h=1.72m
v=$$\sqrt{9.8*1.72}$$
4.1 m/s

2. May 6, 2010

### rl.bhat

According to the conservation of energy,
mgh = 1/2*Iω^2 + 1/2*m*v^2.
here h = d*sinθ. The angular velocity v =ω*R, where R is the radius of the cylinder.

Last edited: May 6, 2010
3. May 6, 2010

### davidelete

I need translational velocity.

4. May 6, 2010

### rl.bhat

v is the translational velocity of the center of mass.

5. May 6, 2010