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 $ 30^{o} $ 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 $ =\frac{2mv\sin \theta }{t} $
$ =\frac{2\times {10^{-1}}\times 10\sin 30{}^\circ }{0.1} $
$ F=10N $
