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A particle of mass m moves on positive x...

A particle of mass m moves on positive x-axis under the influence of force acting towards the origin given by `-kx^2 hat i.` If the particle starts from rest at `x=a,` the speed it will attain when it crosses the origin is

A

`k sqrt(a)`

B

`k`

C

`k sqrt(3a)`

D

`1 / k sqrt(a)`

Text Solution

Verified by Experts

The correct Answer is:
C
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