What must be the angular velocity of a flywheel that is a 22.4 kg, 54 cm radius cylinder to have 450 kgm^2/s of angular momentum?

(a)  

What is the angular momentum of a 3.45 kg, 33 cm radius bike wheel traveling 12.5 m/s?  Assume it is a thin ring. Round to whole number, no units

(a)  

For what time does a torque of 12.0 mN need to be applied to a cylinder with a moment of inertia of 1.40 kgm2 so that its angular velocity increases by 145 rad/s. 3 sig figs, no units

(a)  

What is the mass of a cylindrical 2.30 m radius merry go round if we exert a force of 45.0 N tangentially at its edge for 32.0 seconds, it accelerates to a speed of 1.50 rad/s? Round to nearest whole number, no units

(a)  

A gymnast with an angular velocity of 3.4 rad/s and a moment of inertia of 23.5 kgm^2 tucks their body so that their new moment of inertia is 12.3 kgm^2.  What is their new angular velocity? 2 sig figs, no unit

(a)  

A 5.4 x 10^30 kg star with a radius of 8.5 x 10^8 m and an angular velocity of 1.2 x 10^-9 rad/s shrinks to a radius of 1350 m  What is its new angular velocity? (Round to nearest whole number, no units)

(a)  

A 12 kg point mass on a massless stick 42.0 cm long has a tangential velocity of 2.0 m/s.  How fast is it going if it moves in to a distance of 2.0 cm? Round to nearest whole number, no units

(a)  

A grinding wheel that is a 5.60 kg 0.125 m radius cylinder goes from 152 rad/s to a halt in 22.0 seconds. What was the frictional torque? 3 sig figs, no units

(a)