Questions
The maximum and minimum tensions in the string used to rotate a body in a vertical circle are in the ratio 19:1. The ratio of maximum to minimum speeds of the body
a
2:1
b
19:1
c
4;14
d
5:1
detailed solution
Correct option is A
we know Tmax-Tmin=6mg given TmaxTmin=19 Tmax=19Tmin substituting 18Tmin=6mg Tmin=mg3 mv22l-mg=mg3 ; mv22l=4mg3 ⇒1 then Tmax=19mg 3 =mv12l+mg mv12l=16mg3⇒2 dividing 2 by 1 v1v2=21Talk to our academic expert!
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A pendulum of length / = l m is released from . The rate of change of speed of the bob at is (g = 10 )
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