A stone of mass 0.25 kg tied to the end of a string is whirled round in a circle of radius 1.5 m with a speed of 40 rev./min in a horizontal plane. What is the tension in the string ? What is the maximum speed with which the stone can be whirled around if the string can withstand a maximum tension of 200 N ?

A body of mass 1 kg is tied with a thread and is whirled in a vertical circal of radius 50 cm with a speed of 500 cm*s^(-1) . What will be the tension in the thread at the highest and the lowest positions of the body ?

A child revolves a stone of mass 0.5 kg tied to the end of a string of length 40 cm in a vertical circle. The speed of the stone at the lowest point of the circle is 2 m/s calculate the tension in the string at this point.

A piece of stone of mass 2 kg is tied with a thread of length 5 m and is rotated along a horizontal circular path. The thread can withstand a maximum tension of 30 N. What is the maximum velocity with which the stone can be rotated without snapping the thread? Also find the maximum number of revolutions that the stone can complete in one minute.

If maximum and minimum tension in the string whirling in a circle of radius 2.5 m are in the ratio 5 : 3 then its velocity is

A stone tied to the end of a string 80 cm long is whirled in a horizontal circle with a constant speed. If the stone makes 14 revolutions in 25 s, what is the magnitude and direction of acceleration of the stone?

A body of mass 40 kg is tied at one end of a string of length l. The body is oscillating in a vertical plane with angular amplitude theta_0 . What is the tension in the string when it makes and angle theta with the vertical ? If the breaking load for the string is 80 kgf, what can be the maximum angular amplitude of the body ?