Physics

A copper wire hangs vertically from a fixed point. A load is attached to the lower end of the wire

producing an extension x. The wire obeys Hooke’s law.

Which single change gives an extension 2x?

A wire is stretched by a force F so that it experiences an extension of x. The energy stored in the wire is $\frac{1}{2}Fx$ only if  

a steel wire has original length l, cross-sectional area A, and Young modulus Y. The force constant of the wire can be expressed as

Which of the following does not influence the strain of a wire when a vertical wire of uniform diameter is stretched at its lower end?

A metal wire is stretched by a load. The force-extension graph is shown.

A spring pulled by a force of 10 N, produces an extension of 40 mm. Two identical springs arranges in series produce a total extension of 40 mm. What is the energy stored in the two springs?

A material that can be drawn into wire

The tension of a stretched wire is given by $T=\frac{\lambda}{l}$   with  $\Delta x$  as the extension,  $l$  as the original length of the wire and  $\lambda$  as a constant. If the cross sectional area is  $A$  ,the expression of Young modulus of the wire is

The following quantities are required to calculate Young modulus