A mass is kept on a horizontal frictionless surface. It is attached to a string and rotates about a fixed center at an angular velocity 
0 . If the length of the string and angular velocity are doubled, find the tension in the string which was initially T 0
Text Solution
Verified by ExpertsThe correct answer is:
CHECK THE SOLUTION.
(8 T 0 )
Sol. ω i = ω 0 , λ = λ 0
ω f = 2 ω 0 , λ = 2 λ 0
T i = m ω 0 2 λ 0 = T 0
T f = m (2 ω 0 ) 2 (2 λ 0 ) = 8T 0 Ans.
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