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A smooth tube of certain mass is rotated in a gravity-free space and released. The two balls shown in Figure move towards the ends of the tube.For the whole system, which of the following quantities is not conserved

a)

Angular momentum

b)

Linear momentum

c)

Kinetic energy

d)

Angular speed


Question ID - 100089 | Top Ranker Answer | SaraNextGen

A smooth tube of certain mass is rotated in a gravity-free space and released. The two balls shown in Figure move towards the ends of the tube.For the whole system, which of the following quantities is not conserved

a)

Angular momentum

b)

Linear momentum

c)

Kinetic energy

d)

Angular speed

1 Answer - 5876 Votes

3537

Answer Key : (d) -

(d)

As , angular momentum and linear momentum remain conserved. As the two balls will move radially out,  changes. In order to keep the angular momentum   conserved, angular speed (  should change



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