A body attached to a string of length 
describes a vertical circle such that it is just able to cross the highest point. Find the minimum velocity at the bottom of the circle.
Text Solution
Verified by ExpertsThe correct answer is:
CHECK THE SOLUTION.
Sol. At higest point C
T + mg = 
but T > 0
⇒ 
⇒ v C > 
∴ V C min = 
Using energy conservation between C & A
mg(2 λ ) + 
mv C 2 = 
mv A 2 ⇒ mg (2 λ ) = 
mv A 2 – 
mg λ
⇒ v A = 
(min)
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