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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

`sqrt((2k)/( ma))`

B

`sqrt((k)/(ma))`

C

`sqrt((4k)/(ma))`

D

`sqrt((k)/(2ma))`

Text Solution

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The correct Answer is:
A
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