Two identical solid cylinders

PHYSICS · Single correct · A Level · Physics · Engineering physics · Engineering physics

Problem

Two identical solid cylinders, each of mass

m

, rotate about their central axes. Cylinder A has radius

R

and angular speed

\omega

. Cylinder B has radius

2R

and angular speed

\omega/2

. What is the ratio

L_B/L_A

of the magnitudes of their angular momenta? (a)

1

(b)

0.50

(c)

2

(d)

4