A mass of 2 kg is hung by a string of length 1.5 m as shown in the figure. The mass revolves in a horizontal circular path at 50 revolutions per minute.
The tension in the string in Newtons is
A mass of 2 kg is whirled in a horizontal circle by means of a string at an initial speed of 5 revolutions per minute. Keeping the radius constant the tension in the string is doubled. The new speed is nearly