A flexible wire 80cm long has a mass of 0.4gm . It is stretched by a force of 500N. Find the velocity of the transverse wave in the string .

A copper wire 2 m long and having a diameter of 2mm is suspended from a rigid support . The wire is stretched by a load of 5 kg . Find the work done in stretching the wire and the strain energy per unit of its volume. Y = 12 xx 10^10 N/m^2 and g= 9.8 m/s^2 .

A copper wire 8 cm long is stretched to produce an extension of 0.8 cm in it . Find the lateral strain produced in the wire if sigma of copper is 0.20 .

Find the Young's modulus,stress and strain for a wire 2m long and 1 mm in diameter which when stretched by a force of 2 kg wt extends by 2mm .g=9.8 m/s^2 .

A vehicle of mass 500 kg is moving with a velocity of 15ms −1 . It is brought to rest by a retarding force. Find the distance moved by the vehicle before coming to rest, if the sliding friction between the tyres and the road is 3000N.

A body of mass 100 gram is suspended from a light spring which stretches it by 10 cm. Find the force constant of the spring.

Two equal charges repel each other with a force of 0.4 newton when situated 10 cm apart in air. Find the magnitude of the force when the charges are in a medium of relative permittivity 4.0

A wire of density 9xx10^3kg/m^3 is stretched between two clamps one meter apart and elongates by 0.05cm. What is the lowest frequency of transverse vibrations in the wire.[Young's modules of the wire Y= 9*10^10N/m^2 ].