The increase in length of an object when tensile force is exerted on it.
1 of 24
Compression
The decrease in length of an object when a compressive force is exerted on it.
2 of 24
Tensile Force
Equal and opposite forces acting on a material to stretch it.
3 of 24
Compressive force
Two or more forces together that reduce the length or volume of an object.
4 of 24
Tensile Deformation
A change in the shape of an object due to tensile forces.
5 of 24
Compressive Deformation
A change in the shape of an object due to compressive forces.
6 of 24
Hooke's Law
The force applied is directly proportional to the extension of the spring unless the limit of proportionality is exceeded.
7 of 24
Elastic Limit
The value of stress or force beyond which elastic deformation becomes plastic deformation, and the material or object will no longer return to its original shape or size when the stress or force is removed.
8 of 24
Elastic Deformation
A reversible change in the shape of an object due to a compressive or tensile force - removal of stress or force will return the object to its original shape (no permanet strain).
9 of 24
Tensile Strain
The extension per unit length, a dimensionless quantity.
10 of 24
Tensile Stress
The force per unit cross-sectional area, measured in Pa.
11 of 24
Young Modulus
The ration of tensile stress to tensile strain when these quantities are directly proportional to each other.
12 of 24
Plastic Deformation
An irreversible change in the shape of an object due to a compressive or tensile force - removal of the stress or force produces permanent deformation.
13 of 24
Force Constant
A quantity determined by dividing force by extension / compression for an object obeying Hooke's law - called he constant of proportionality in Hooke's law measured in Nm^-1.
14 of 24
Stiffness
The ability of an object to resist deformation.
15 of 24
Elastic Potential Energy
The energy stored in an object because of its deformation.
16 of 24
Ultimate Tensile Strength
The maximum stress that a material can withstand before it breaks.
17 of 24
Hysteresis Loop
A loop-shaped plot obtained when, for example, loading and unloading a material produce different deformations.
18 of 24
Ductile
A property of a material that has a large plastic region in a stress - strain graph, so it can be drawn into a wire.
19 of 24
Limit of Proportionality
The value of stress or force beyond which stress is no longer directly proportional to strain.
20 of 24
Yield Point
The point on a stress - strain graph beyond which the deformation is no longer entirely elastic.
21 of 24
Strong Material
A material with a large value for ultimate tensile strength.
22 of 24
Light-dependent Resistor (LDR)
An electrical component with a resistance that decreases as the light intensity on it increases.
23 of 24
Kilowatt-hour
A derived unit of energy, most often associated with paying for electrical energy, symbol kWh, 1kWh = 3.6MJ. Energy in kWh can be calculated by multiplying the power in kW by the time in hours.
24 of 24
Other cards in this set
Card 2
Front
The decrease in length of an object when a compressive force is exerted on it.
Back
Compression
Card 3
Front
Equal and opposite forces acting on a material to stretch it.
Back
Card 4
Front
Two or more forces together that reduce the length or volume of an object.
Back
Card 5
Front
A change in the shape of an object due to tensile forces.
Comments
No comments have yet been made