A ball of mass 0.1 kg is suspended by a string 30 cm long. Keeping the string always taut, the ball describes a horizontal circle of radius 15 cm. Find its angular speed and tension.

One end of a light string is fixed to the celling and the other end is tied to the wall. A body of mass 500 g is suspended from that string in such a way that the part of the string towards the wall remains horizontal and the portion towards the ceiling makes an angle of 30^(@) with the ceiling. Find the tension on the two parts of the string.

A sphere of mass 200 g remains suspended from a rigid support by means of a thread of length 130 cm. The sphere is rotated in a horizontal circular path of radius 50 cm. Determine its time period of rotation and tension in the thread.

Find the length of an arc of a circle of radius 5cm subtending a central angle measuring 15^0dot

A small ball of mass 2 xx 10^(-3) kg having a charge of 1 muC is suspended by a string of length 0.8 m. Another identical ball having the same charge is kept at the point of suspension. Determine the miniumum horizontal velocity which should be imparted to the lower ball, so that it can make complete revolution.

Find the length of an arc of a circle of radius 7 cm subtending a central angle measuring 30^0dot

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.