1.

A force of constant magnitude F_(0) is applied in the tangential direction as shown in the figure. Assume that the bob is at its lowest point initially.

Answer»

SPEED of bob at `theta=60^(@) " is "sqrt((2L)/(m)[(F0pi)/(3)+(mg)/(2)])`
Speed of bob at `theta=60^(@) " is "sqrt((2L)/(m)[(F0pi)/(3)-(mg)/(2)])`
Tension in THREAD at `theta=60^(@) " is "[(2F0pi)/(3)-(mg)/(2)]`
Tension in thread at `theta=60^(@) " is "[(2F0pi)/(3)+(mg)/(2)]`

Answer :B::C


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