elastic balls are placed at rest on a smooth horizontal plane which is circular at the ends with radius 
as shown in the figure. The masses of the balls are 
, respectively. What is the minimum velocity which should be imparted to the first ball of mass m such that this nth ball will complete the vertical circle?
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
A
In head-on elastic collision,
Finally, 
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