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What is the radius of curvature of the p...

What is the radius of curvature of the parabola traced out by the projectile in the previous problem at a point where the particle velocity makes and angle `theta/2` with the horizontal?

A

`-mgu cos theta tan(theta//2)`

B

`-mgu tan theta cos (theta//2)`

C

`-2mgu tan theta sin(theta//2)`

D

`-2mgu sin theta tan(theta//2)`

Text Solution

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The correct Answer is:
A
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