Rotational Dynamics

Question 1

Give an equation between I1, m,r,ω1, ω2

Answer 1

I1=mr^2ω2/(ω1-ω2)

Question 2

Give the units of I

Answer 2

Kgm^2

Question 3

Give the units of angular momentum

Answer 3

Kgm^2rads^-1

Or Nms

Question 4

If the mass of a disc is further from the axis of rotation how will it effect the moment of inertia

Answer 4

Increase

Question 5

Give an equation between I1, I2, ω1, ω2.

Answer 5

I1ω1=I2ω2

Question 6

Define conservation of angular momentum

Answer 6

Total angular momentum of a system remains constant provided no external torque acts on it