Question

Please help

Answer 1

http://screencast.com/t/ckq5yb8R

Answer 2

@Callisto @mathslover

Answer 3

i guess its the area under the upper curve since E=F*x..because when the force is release the displacement goes on decreasing but it does not become zero at force zero..that means there is permanent extension..but i'm not sure about it

Answer 4

I agree with @abhi7 the area under the F-X curve will give you the energy required for permanent deformation.

Answer 5

http://screencast.com/t/7mGYElkP

Answer 6

sorry fr the delay

Answer 7

No problem but I don't think that there is need for that now!

Answer 8

yes

Answer 9

can u explain me by drawing a diagram

Answer 10

Here it is. Area under F-x curve

Answer 11

the work done is equal to \(\int F\cdot\mathrm dx\), which is the area under the curve

work is done stretching the wire until \(x=0.9 [\text{mm}]\)

then the force is relaxed and the wire returns to \(x=0.1 [\text{mm}]\)

Answer 12

The work done is the area between the two curves. The upper curve is the work done stretching the wire elastically and beyond and the lower curve is the energy given back or the work the wire does in going to the final length.

Answer 13

thanks alot. i have another question. will u be able to help

Answer 14

maybe

Answer 15

what is the question?

Answer 16

i posted it as a new question