Question

Calculate the work done if a wire is loaded by mg weight and increase in length is l

Answer 1

The stress will be required for a length to a wire will be equal to the load being' produced elongation e in a wire,the rise in temperature required

The Work was done on the wire during stretching = average force x extension = ½ Fe

Work was done if a wire is loaded by = 1/2Fl

So the mg weight and increase in length is l

=Mgl/2

Answer 2

Answer:

Mgl/2

Explanation:

Work done=1/2YA/l(L)^2

1/2FL

1/2Mgl

Mgl/2