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A heavy particle is projected from a poi...

A heavy particle is projected from a point on the horizontal at an angle `60^(@)` with the horizontal with a speed of `10m//s`. Then the radius of the curvature of its path at the instant of crossing the same horizontal is `……………………..`.

A

Infinite

B

10 m

C

11.54 m

D

20 m

Text Solution

Verified by Experts

The correct Answer is:
D
`rArr a_(bot)=10cos 60^(@)=5m//s^(2)`
`R=v^(2)/a_(bot)=(10 xx 10)/(5)=20`
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