Force
what is force?
A force is a push or pull exerted by one
object on another
formula for strain
strain = deformation/ original length
what is moment
A moment of a force is a measure of its tendency to cause a body to rotate about a point or axis
how to solve for the hypotenuse on a triangle
Pythagorean’s Theorem to solve for a hypotenuse
Modulus of Elasticity
A measure of a material’s ability to regain its original
dimensions after the removal of a load or force. The modulus is the slope of the straight line portion of the stress-strain diagram up to the proportional limit
what is tensile force?
A tensile force expands or
lengthens the object it is acting
on.
what is strain
Strain is deformation per unit length, a
dimensionless quantity
formula to find moment
Moment = Force * Distance
sin 0 formula
Sin q = O/H
Modulus of Resilience
A measure of a material’s ability to absorb energy up to the elastic limit. This modulus is represented by
the area under the stress vs. strain curve from
0-force to the elastic limit
what is compressive force
A compressive force compresses or shortens
the object it is acting on
proportional limit
greatest stress a material is
capable of withstanding without deviation from
straight line proportionality between the stress and
strain. If the force applied to a material is released,
the material will return to its original size and
shape.
positive moment
A moment with a tendency to rotate counter clockwise
cos 0 formula
Cos q = A/H
Modulus of Toughness
A measure of a material’s ability to plastically deform without fracturing. Work is performed by the material
absorbing energy by the blow or deformation. This measurement is equal to the area under the stress vs. strain curve from its origin through the rupture point
what unit is force measured in
newtons
yield point
The point at which a sudden elongation
takes place, while the load on the sample remains
the same or actually drops. If the force applied to
the material is released, the material will not return
to its original shape
negative moment
A moment with a tendency to rotate clockwise
tan 0 formula
Tan q = O/A
what is the POE teachers name
Mr. Johnson
what can force change?
the direction in which an object is moving
Ultimate Strength
The point at which a maximum load for a sample is achieved. Beyond this point elongation of the sample
continues, but the force exerted decreases
what is moment the same as
torque
word to remember these formulas
SOHCAHTOA
what is the name of the class
principles of engineering