A cubical block of side is moving with velocity on a horizontal smooth plane as shown in Figure. It hits a ridge at point . The angular speed of the block after it hits is

a) |
b) |
c) |
d) |
Zero |

A cubical block of side is moving with velocity on a horizontal smooth plane as shown in Figure. It hits a ridge at point . The angular speed of the block after it hits is

a) |
b) |
c) |
d) |
Zero |

1 Answer

127 votes

**(a)**

or

Net torque about is zero

Therefore, angular momentum about will be conserved, or

127 votes

127