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A particle describes a horizontal circle...

A particle describes a horizontal circle on the smooth surface of an inverted cone, the height of the plane of the circle above the vertex is 9.8 cm. Find the speed of the particle (g= `9.8 m//s^2`) [See Fig.] (a) given in the answer section]

A

`0.49 ms^(-1)`

B

`0.98 ms^(-1)`

C

`1.96 ms^(-1)`

D

`3.92 ms^(-1)`

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The correct Answer is:
B
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