A ball of mass collides horizontally with a stationary wedge on a rough horizontal surface, in the two orientations as shown.Neglect friction between the ball and the wedge. The student comment on the system of ball and wedge in these situations
Saurav: Momentum of the system in - direction will change by significant amount in both the cases
Rahul: There are no impulsive external forces in - direction in both cases; hence the total momentum of the system in
- direction can be treated as conserved in both cases
a) |
Sauravis incorrect andRahul is correct |
b) |
Sauravis correct and Rahul is incorrect |
c) |
Both are correct |
d) |
Both are incorrect |
A ball of mass collides horizontally with a stationary wedge on a rough horizontal surface, in the two orientations as shown.Neglect friction between the ball and the wedge. The student comment on the system of ball and wedge in these situations
Saurav: Momentum of the system in - direction will change by significant amount in both the cases
Rahul: There are no impulsive external forces in - direction in both cases; hence the total momentum of the system in
- direction can be treated as conserved in both cases
a) |
Sauravis incorrect andRahul is correct |
b) |
Sauravis correct and Rahul is incorrect |
c) |
Both are correct |
d) |
Both are incorrect |
(d) In case I there is no horizontal external impulse on ball and mass system while in case II friction is impulsive as normal with ground is impulsive. Hence, both statements are incorrect |