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A particle of mass m is projected with a...

A particle of mass m is projected with a velocity v making an angle of `45^@` with the horizontal. The magnitude of the angular momentum of the projectile abut the point of projection when the particle is at its maximum height h is.

A

zero

B

`(mv^3)/(4sqrt2g)`

C

`(mv^2)/(sqrt2g)`

D

`(msqrt(2gh^3))`

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