Topic: Angular Momentum I have no clue how to figure these out

Subject:PhysicsPrice:2.84 Bought7

Share With

Topic: Angular Momentum

I have no clue how to figure these out. Please help me.

1)What is the angular momentum for a 2kg ball being swung in a circle of radius 3m at a speed of 4 m/s?

2)A 3 kg object is moving in a circle with a speed of 5 m/s. If the angular momentum of the object is 30 kgm2/s, what is the radius of the circle?

3)A solid disk is rotating at an angular speed of 3 rad/s. If the mass of the disk is 10 kg and a radius of 2m, what is the angular momentum of the disk?

4)A thin ring of mass 3kg and radius 1 m has a momentum of 90 kgm2/s. What is the angular velocity of the ring?