Question

A stone of mass m tied to one end of a wire of length l.The diameter of the wire id d and it is suspended vertically.The stone is now rotated vertically. The stone is now rotated in a horizontal plane

Answer 1

A stone of mass 0.5 kg is attached to one end of a 0.8m long aluminium wire of 0.7mm diameter and suspended vertically.The stone is now rotated in a horizontal plane at a rate such that the wire makes an angle of 85 degree with the vertical.Find the increase in length of the wire(Y=7 x 1010 N/m 2 ,sin 85 =0.9962,cos85 =0.0872)