Try this Challenge if you dare?
The bob of mass m , charge q is circulating in a vertical circle of radius R , with the help of a massless inextensible string. if the maximum speed of the bob is V , then the period of revolution is . If an electric field of magnitude (mg/q) is setup which makes an angle 60 degree with upward vertical.
Again the bob is circulating in same circle and its maximum speed is V , the period of revolution being .
Find 95 *( )?
Data
m = 5 kg,
g=10
R= 2m
q = 1 C
Additional challenge
Solve this without actually solving for the time periods!!!
The answer is 95.
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1 solution
The thing which differ in 2nd case is that the equilibrium position is shifted by an angle of 60 degree ( By using Concept of effective gravity )
So Time period is remain same in both situation since it is independent of equilibrium position !!
Nice put up question @Tushar Gopalka and I suggest u to add dummy values of such as maximum velocity , mass , Charge etc. So that Problem becomes more good .