Rotational MotionHard
Question
A smooth tube of certain mass is rotated in gravity free space and released. The two balls shown in the figure move towards ends of the tube. For the whole system which of the following quantity is not conserved : -
Options
A.Angular momentum
B.Linear momentum
C.Kinetic energy
D.Angular speed
Solution
When ball moves towards ends of the tube MI increases
(∴ For system
are zero)
∴ Angular momentum & linear momentum remains constant
∴ I1ω1 = I2ω2 I2 > I1 ω2 < ω1
(∴ For system
are zero)∴ Angular momentum & linear momentum remains constant
∴ I1ω1 = I2ω2 I2 > I1 ω2 < ω1
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