Define `1kg wt` of force.

A sphere of mass 40 kg is alternated by another sphere of mass 15kg with a force of 1/(10) mg -wt . Find the value of G if the separation between the spheres is 20 cm.

A wire can be broken by applying a load of 15 kg wt. The force required to break the wire of the same length and material but of twice the diameter of the wire will be

Which one is greater-the gravitational force of the earth on 1 kg iron or the force of gravitation applied by 1 kg on earth ?

A force of 100 gm wt. is required to pull a body weighing 1 kg over ice. The coefficient of friction is

One metre long sonometer wire is stretched with a force of 4kg wt, another wire of same material and diamter is arranged along a side. The second wire is stretched with a force of 16kg wt. if the length of the second wire is in its second harmonic is the same as fifth harmonic of the first wire, then the length of the second wire will be

A string when stretched by a weight of 4 kg wt. gives a note of frequency 256 Hz. If the tension is increased to 16 kg wt., the frequency of note produced will be: