Calculate the work done, if a wire is loaded by 'Mg' weight and the increase in lengt is`l`

The length of a copper wire increases by 0.01 metre, when it is loaded with 10 kg weight. Another copper wire of the same length but double the radius is loaded with the same weight. The increase in length of the second wire, in metre, will be

The length of a copper wire increases by 0.01 metre, when it is loaded with 10 kg weight. Another copper wire of the same length but double the radius is loaded with the same weight. The increase in length of the second wire, in metre, will be

Show dimensionmally that the expression , T = (MgL)/(pi r^(2) is dimensiomally current , where T is Young 's modulas of the length of the wire ,Mg is the weight applied in the wire and L is the increase in the length of the wire .

Calculate the work done by a person in lifting a load of 20 kg from the ground and placing it 1 m high on a table

Calculate the work done by a person in lifting a load of 20 kg from the ground and placing it 1m high on a table.

If a wire is extended to a new length , the L, the work done is

Work done in stretching a wire by 1mm is 2J. Then calculate the work done for stretching another wire of same material but with double the radius and half the length by 1mm.

Show dimensionally that the expression , T = (MgL)/(pi r^(2)l is dimensionally correct , where T is Young 's modulus of the length of the wire ,Mg is the weight applied in the wire and L is the original length of the wire ,and l is the increase in the length of the wire .

If one end of a wire is fixed with a rigid support and the other end is stretched by a force of 10 N, the increase in length is 0.5 mm. The ratio of enegry of the wire and the work done in displacing it through 1.5 mm by the weight is