SECTION – 3 : (Integer value correct Type)
This section contains 5 questions. The answer to each question is a single digit integer, ranging from 0 to 9 (both inclusive).
A bob of mass m, suspended by a string of length 
is given a minimum velocity required to complete a full circle in the vertical plane. At the highest point, it collides elastically with another bob of mass m suspended by a string of length 
, which is initially at rest. Both the strings are mass-less and inextensible. If the second bob, after collision acquires the minimum speed required to complete a full circle in the vertical plane, the ratio 
is
Text Solution
Verified by Experts5
(5)
The initial speed of 1 st bob (suspended by a string of length 
)is 
.
The speed of this bob at highest point will be 
.
When this bob collides with the other bob there speeds will be interchanged.
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