WorksheetsPractice Exercise: Stress & Strain
Total questions: 15
Worksheet time: 1hrs 15mins
A cylindrical rod of cross-sectional area A experienced pressure p due to a compressive force F. If the force applied is reduced to one-third what happens to pressure?
also reduced to one-third
tripled
remains the same
What relationship exists between applied force and strain?
direct
indirect
none at all
This refers to the ratio of tensile stress to tensile strain.
Bulk Modulus of elasticity
Shear Modulus of Rigidity
Young's Modulus of elasticity
Given the Young's modulus of elasticity below rank the metals according to the magnitude of tensile stress it can hold from highest to lowest.
Aluminum 69 GPa
Brass 125 GPa
Steel 200 GPa
Aluminum, Brass, Steel
Brass, Aluminum, Steel
Steel, Brass, Aluminum
What is the correct label for A and B shown in the figure below?
A - Tension; B- Compression
A - Compression; B - Tension
A - Torsion; B - Tension
The bulk modulus of three materials are listed below. Arrange them from highest to lowest compressibility.
A : 2 x 1010 N/m2
B : 4 x 1010 N/m2
C : 10 x 1010 N/m2
A, B, C
B, C, A
C, B, A
Compressibility is the inverse of bulk modulus.
True
False
How much force is required to shear off a metal sheet whose thickness is 2mm and width of 40cm? The shear stress is 5 x 107 N/m2.
400 kN
40 kN
4 kN
A 5cm cube of substance has its upperface displaced by 0.65cm by a tangential force of 0.25N. Calculate the modulus of rigidity.
769 Pa
7.69 Kpa
769 MPa
A nylon string, has a diameter of 2mm, is pulled by a force of 100N. Determine the stress.
315 MPa
31.5 MPa
3.15 MPa
A 1-m long cord is pulled by a force causing its length to change by 2mm. Determine the strain.
0.2
0.02
0.002
A concrete has a height and unit area of 5 m and 3sq.m., respectively. If it supports a mass of 30,000 kg and its height changes by 0.025mm, what is its modulus of elasticity of this concrete?
2.00 GPa
19.6 GPa
2.00 MPa
Which of the following does NOT determine shear modulus?
Force
Area
Shear strain
Volume
Increasing shearing force on a steel metal sheet results to lesser shear strain.
True
False
Which is the correct equation to find the change in length of a cylindrical metal rod the experience a tensile stress?
A
B
C
