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A and B are two fixed points at ta dista...


A and B are two fixed points at ta distance `3l` apart. A particle of mass `m` placed at a point `P` experiences the force `2((mg)/(l))vecPA` and the force `((mg)/(l))vecPB` simultaneously. Initially at `t=0`, the particle is projected from A towards B with speed `3sqrt(gl)`.
Q. The particle moves simple harmonically with period `T` and amplitude `A`.

A

zero

B

`3sqrt(gl)`

C

`2sqrt(gl)`

D

`sqrt(gl)`

Text Solution

Verified by Experts

The correct Answer is:
A
Since B is the amplitude point, the instantneous velocity at `B=vB=0`.
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