# Homework Help: Equation for torque of a cylinder, a hollow cylinder, and a sphere.

1. Mar 1, 2010

### nlingraham

1. The problem statement, all variables and given/known data

What is the equation for the torque of a cylinder, a hollow cylinder, and a sphere rolling down an incline?

2. Relevant equations

This is what I don't know

3. The attempt at a solution

I have no idea where to start.

2. Mar 1, 2010

### rock.freak667

Torque is the rate of change of angular momentum

if angular momentum = Iω, that is torque then?

3. Mar 1, 2010

### zachzach

What is the equation for torque? Similarly to F = ma, the equation for torque is
$$T$$ $$=$$ $$I$$$$\alpha$$

4. Mar 2, 2010

### nlingraham

Thanks, you guys are awesome