A particle of mass m moves along the int...

A particle of mass m moves along the internal smooth surface of a vertical cylinder of radius R as shown. The force which acts on the wall of the cylinder if initially the velocity `v_(0)`, of the particle makes an angle `alpha` with the horizontal (Assume that particle does not leave contact with the curved surface of the cylinder) is

`(mv_(0)^(2))/(R)`

`(mv_(0)^(2)cos^(2)alpha)/(R)`

`(mv_(0)^(2)sin^(2)alpha)/(R)`

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