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  • A cubical block of side 30 cm is moving with velocity 2 ms−1 on a smooth horizontal surface. The surface has a bump at a point O as shown in figure. The angular velocity (in rad/s)

A cubical block of side 30 cm is moving with velocity 2 ms−1 on a smooth horizontal surface. The surface has a bump at a point O as shown in figure. The angular velocity (in rad/s) of the block immediately after it hits the bump, is :

 

Option: 1

5.0


Option: 2

 6.7


Option: 3

9.4


Option: 4

13.3

 


Answers (1)

best_answer

Using Conservation of angular momentum

L= IW

mv \left ( \frac{a}{2} \right )=\frac{2}{3}ma^{2}\omega

\omega=\frac{3v}{4a}=5

Posted by

Suraj Bhandari

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