A) \[1.2kg\]
B) \[0.5kg\]
C) \[20kg\]
D) 3kg
Correct Answer: A
Solution :
Weight of the disc will be balanced by the force applied by the bullet on the disc in vertically upward direction. \[F=nmv=40\times 0.05\times 6=Mg\] Þ \[M=\frac{40\times 0.05\times 6}{10}=1.2\,kg\]You need to login to perform this action.
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