A ball of mass m moving with a speed u undergoes a head on collision with a ball of mass n m initially at rest. The fraction of incident energy transferred to heavier ball is
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a
n1+n
b
n(1+n)2
c
2n(1+n)2
d
4n(1+n)2
answer is D.
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Detailed Solution
. Fraction of energy transferred=1−v1u12=1−m−nmm+nm2 =1−(1−n)2(1+n)2=4n(1+n)2