Consider the following statements.
(P) Hardness is the resistance of a material to indentation.
(Q) Elastic modulus is a measure of ductility.
(R) Deflection depends on stiffness.
(S) The total area under the stress-strain curve is a measure of resilience.
Among the above statements, the correct ones are
Strain energy is used to find
Which one of the following statements is correct? The work done in stretching an elastic string varies
The maximum stress induced in a body if the load ‘P’ is applied with impact upon an area of cross section ‘A’ is (When h = Height through which the load falls, E = Modulus of rigidity, L = Length of the body)
Which of the following gives the correct expression for strain energy stored in a beam of length L and of uniform cross section having moment of inertia ‘I’ and subjected to constant bending moment M?
A bar having length L and uniform cross section with area A is subjected to both tensile force P and torque T. If G is the shear modulus and E is the Young’s modulus, the internal strain energy stored in the bar is
An axial load of 100kN is applied onto a bar of length 3 m and cross-sectional area of 100 mm2. If E = 200 kN/mm2 the total strain energy in the bar is equal to
Length, L = 3000 mm 2
Cross section area, A = 100 mm E = 200 × 103 N/mm2
= 750000 Nmm
A circular bar L (long) in m and d (diameter) in m is subjected to tensile force of F in kN. Then the strain energy, U will be (Where, E is the modulus of elasticity in kN.m2)
The strain energy in bar of 20 mm diameter, 1.0 m length, and young’s modulus 200.0 GPa under an axial force of 100.0 N is
Length, L = 1000 mm
E = 200 × 103 MPa
P = 100N
U = 0.0796 Nmm
If σ and E for a body of volume 2 × 105 mm3 are 10 N/mm2 and 1 × 105 N/mm2, Resilience of the body is
E = 1 × 105N/mm2
V = 2 × 105N/mm3
= 100 Nmm