# 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 :- 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

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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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Following question is based on definite series.  In given question, some symbols are missing shown by(-).  The missing symbols are given in proper sequence as one of four alternatives given under each question.  Find out the correct alternative.

 - - K – E – K X – P – X (a) P E X E P K (b) P K E X E K (c) K E P E X K (d) E P X P E K