Work Energy And Power Question 113

Question: 100 g of a iron ball having velocity 10 m/s collides with a wall at an angle 30o and rebounds with the same angle. If the period of contact between the ball and wall is 0.1 second, then the force experienced by the ball is [DPMT 2000]

Options:

A) 100N

B) 10 N

C) 0.1 N

D) 1.0 N

Show Answer

Answer:

Correct Answer: B

Solution:

F = Rate of change in momentum =2mvsinθt

=2×101×10sin300.1

F=10N



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