A sphere is released on a smooth inclined plane from the top. When it moves down, its angular momentum is |
|
a) |
Conserved about every point |
b) |
Conserved about the point of contact only |
c) |
Conserved about the centre of the sphere only |
d) |
Conserved about any point on a line parallel to the inclined plane and passing through the centre of the ball |
A sphere is released on a smooth inclined plane from the top. When it moves down, its angular momentum is |
|
a) |
Conserved about every point |
b) |
Conserved about the point of contact only |
c) |
Conserved about the centre of the sphere only |
d) |
Conserved about any point on a line parallel to the inclined plane and passing through the centre of the ball |
(d) As the inclined plane is smooth, the sphere can never roll, rather it will just slip down. Hence, the angular momentum remains conserved about any point on a line parallel to the inclined plane and passes through the centre of the ball |