WorksheetsAQA A level Solids Under Stress
Total questions: 12
Worksheet time: 10mins
Linear strain is defined as:
Ratio of change in length to original length.
Force per unit cross sectional area.
Decrease in length.
Pressure on a material from a load.
What is the correct unit for stress:
newton
pascal
no unit
newton/metre
Stress =
AF
Am
F × d
lΔl
Given the Young's modulus of elasticity below rank the metals according to the least strain for the same load. Rank from highest to lowest.
Aluminum 69 GPa
Brass 125 GPa
Steel 200 GPa
Aluminium, Brass, Steel
Aluminium, Steel, Brass
Brass, Steel, Aluminium
Steel, Brass, Aluminium
If you apply a force to deform a material then remove the force and the material returns to its original shape this is
Elastic deformation
Plastic deformation
Ductile deformation
Malleable attrition
If you apply a force to deform a material then remove the force and the material returns to its original shape this is
Elastic deformation
Plastic deformation
Ductile deformation
Malleable attrition
What is 0.2 mm2 in m2
2 x 10-7
2 x 10-3
200
2 x 10-4
Calculate the stress when a force of 1000 N acts over a circular wire of diameter 0.2 m? (In pascals to 2 sf)
(a)
A 2 m wire extends by 4 mm, the strain is:
0.5
2 x 10-3
2 x 10-6
0.005
What is the Youngs Modulus if a stress of 24 MPa causes a strain of 0.003?
8 MPa
8 kPa
8 GPa
8 TPa
A 2 cm spring stretches to 12 cm when a 2 kg mass is added to the end. The spring constant is:
0.2 kgcm-1
6 Nm-1
200 Nm-1
20 Nm-1
A 2 cm spring stretches to 12 cm when a 2 kg mass is added to the end. The energy stored in the spring is:
100 J
1 J
2 J
20 J
