A particle of mass comes down on a smooth inclined plane from point at a height of from rest. The magnitude of change in momentum of the particle between position ( just before arriving on horizontal surface)and (assuming the angle of inclination of the plane as with respect to the horizontal) is
a) |
0 |
b) |
2 |
c) |
d) |
A particle of mass comes down on a smooth inclined plane from point at a height of from rest. The magnitude of change in momentum of the particle between position ( just before arriving on horizontal surface)and (assuming the angle of inclination of the plane as with respect to the horizontal) is
a) |
0 |
b) |
2 |
c) |
d) |
(c)
The velocity of the particle when it reaches point from is
(directed along )
(i)
(ii)
When the particle reaches point the momentum is as shown in fig
(iii)
(iv)
Therefore
(v)
Magnitude of change in momentum is