AIIMS 2018 Physics Impulse and Momentum MCQ Question
What is the direction of force on the wall due to the ball in two cases shown in the figures?
In (a) force is normal to the wall and in (b) force is inclined at 30° to the normal.
In (a) force is normal to the wall and in (b) force is inclined at 60° to the normal.
In (a) the force is along the wall and in (b) force is normal to the wall.
In (a) and (b) both the force is normal to the wall.
Correct Answer
Detailed Explanation
In both cases (a) and (b), the impulse experienced by the ball along the x-axis is negative, indicating a reversal of momentum due to the collision with the wall. However, the impulse along the y-axis remains zero in both scenarios, signifying that there is no change in momentum in that direction. Since the force exerted on the wall is normal to the wall and directed along the positive x-axis, the net effect of the collision is consistent with the conservation of momentum principles, justifying option D as the correct choice. Other options are not applicable as they do not provide relevant information or scenarios related to the problem.
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