1.

A particle of mass `10gm` is placed in a potential field given by `V = (50x^(2) + 100)J//kg`. The frequency of oscilltion in `cycle//sec` isA. `(10)/(pi)`B. `(5)/(pi)`C. `(100)/(pi)`D. `(50)/(pi)`

Answer» Correct Answer - B
Potential energy `U = mV`
` rArr U = (50x^(2) + 100)10^(-2)`
`F = (dU)/(dx) = (- 100x)10^(-2)`
`rArr m omega^(2)x = -(100 xx 10^(-2))x`
` 10 xx 10^(-3) omega^(2) x = 100 xx 10^(-2)x`
`rArr omega^(2) = 100 :. omega = 10`
`rArr f = (omega)/(2pi) = (10)/(2pi) = (5)/(pi)`


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