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Time period of a block when suspended from the upper plate of a parallel plate capactor by a spring of stiffness `k` is when block ids unchanged If a change `g` is given to the block then new time period of oscilation will be A. `T`B. `gtT`C. `ltT`D. `ge T`

Answer» Correct Answer - A<br>The force that act on the block are `qE mg `and spring force since `qE` and `mg` are constant force the only variable elactic force change by `kx` where `x` is elongation in the spring<br> Unbalanced (restoring) force<br> `F = - kx`<br> `or - m omega^(2) x = - kx`<br> `or, omega = sqrt((k)/(m))`<br> `T = (2m)/(omega) = 2pi sqrt((m)/(k))`


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