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Deformation of Solid
Answer all questions within the time provided
What is Young modulus
Explain what is elastic deformation.
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 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
is the ability of a material to shape or bend from the use of compressive force
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?
This material will not undergo / will undergo very little plastic deformation before break
A material that can be drawn into wire
The tension of a stretched wire is given by with as the extension, as the original length of the wire and as a constant. If the cross sectional area is ,the expression of Young modulus of the wire is
At ______, plastic deformation starts.
The following quantities are required to calculate Young modulus