Rotational Motion Review

All the forces act through the center

A body is in rotational equilibrium

$$\Sigma F\ =\ 0$$  

A body remains in unstable equilibrium

Its potential energy will decrease

The center of gravity is directly above the axis of rotation

No gravitational work is done

Stable equilibrium follows

Depends on the axis of rotation

Cannot be zero

Depends on the mass distribution

All the preceding

Rotational analogue of force

Energy due to rotation

Rate of change of linear momentum

Force that is tangent to a circle

Rotational analogue of mass

Change in momentum due to rotation

Not dependent upon mass distribution

Angular speed that is tangent to a circle

Watt

N*m

$$kg\cdot\frac{rad}{s^2}$$  

N*rad

Remain the same

Increase

Decrease

Unable to determine

N*m

$$kg\cdot\frac{m}{s}$$  

J*m

$$kg\cdot\frac{m^2}{s}$$   

Sliding

Accelerating

Revolving

Rolling

Negative

Rolling

Sliding

Positive