A) \[T\]
B) \[>T\]
C) \[<T\]
D) \[\ge T\]
Correct Answer: A
Solution :
The forces that act on the block are \[qE\] and\[mg\]. Since, \[qE\] and \[mg\] are constant forces, the only variable elastic force changes by\[kx\] (where, \[x\] is the elongation in the spring). Unbalanced (restoring) force,\[F=-kx\] \[\Rightarrow \] \[-m{{\omega }^{2}}x=-kx\] \[\Rightarrow \] \[\omega =\sqrt{\frac{k}{m}}=T\]You need to login to perform this action.
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