A stone tied to a rope when whirled in hand, what force puts the hand ?

A stone of mass 100g tied to a rope, is whirled in a horizontal circle of radius 0.42m at the rate of 3 r.p.m. calculate the tension along the rope.

If s string tied to a stone while whirling in a circle with uniform speed is cut, in which direction would the stone move ?

If a stone tied at one end of a string is whirled and the string breaks, Why does the stone fly tangentially ?

A half kg weight is tied to one end of a metal wire of length 0.6 m . By holding the other end in the hand, the wire is whirled in a vertical and has an angular velocity of 2 r.p.s. at bottom of the circle. What is the elongation of the wire at the lowest point ? Area of cross-section of the wire = 5 x 10 ^(-6) m^2 . Y for steel = 2 x 10^10 N/m^2 .

If a point charge placed at any point on the axis of an electric dipole at some large distance experiences a force F, then what force will act on the point charge when its distance from the dipole is doubled ?

A uniform rope of length L resting on a frictionless horizontal surface is pulled one end by a force F. What is the tension in the rope at a distance l From the end where force is applied ?

A ballet dancer revolved at 24 r.p.m. with her hands folded. If she stretches her hands so that her MI increases by 20% then what will be the new frequency of rotation ?