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A small mass m is suspended from one end
of a vertical string and then whirled in a
horizontal circle at a constant velocity v
A The centripetal force acting on m is
3.
A
Tcose
B The only force on m is its weight.
C The weight of the mas is given by
Tsine
D The string become inclined to the
vertical at an angle 0 where tane - v²/rg

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