A small sphere of mass 'm' is attached to a cord and rotates in a vertical plane about a point `O`. If the average speed of the sphere is increased, the cord is most likely to break at the orientation when the mass is at :
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A small sphere B of mass m is released form rest in the position shown and swings freely in a vertical plane, first about O and then about the peg A after the cord comes in contact with the peg. Determime the tension in the cord (a) just before the sphere comes in contact with the peg. (b) just after it comes in contact with the peg.

A small sphere B of mass m is released form rest in the position shown and swings freely in a vertical plane, first about O and then about the peg A after the cord comes in contact with the peg. Determime the tension in the cord (a) just before the sphere comes in contact with the peg. (b) just after it comes in contact with the peg.

A mass m is attached to a thin wire and whirled in a vertical circle. The wire is most likely to break when:

A mass m is attached to a thin wire and whirled in a vertical circle. The wire is most likely to break when:

A body of mass 2 kg is attached to a cord and whirled in a vertical circle of radius 2 m. The minimum speed at the bottom of the circle so that the cord will not slacken when the body rounds the top of the circle will be