A stone of mass 1 kg tied to a light inextensible string of length 
is whirling in a circular path of radius 
in a vertical plane. If the ratio of the maximum tension in the string to the minimum tension in the string is 4 and if 
is taken to be 
, the speed of the stone at the highest point of the circle is
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
D
Since the maximum tension 
in the string moving in the vertical circle is at the bottom and minimum
tension 
is at the top.
∴ ∴ 
and 
∴ ∴ 
or 
or 
but 
∴ ∴ 
⇒ ⇒ 
∴ ∴ 
or 
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