Basic physics definitions Flashcards
1
Q
Centre of mass
A
the point at which a single force on the object has no turning effect
2
Q
Scalar
A
a unit with only magnitude
3
Q
Vector
A
a quantity with magnitude and direction
4
Q
Moment
A
the moment about a point is the force multiplied by the perpendicular distance between the line of action of the force and the point
5
Q
the principle of moments
A
for a body to be in equilibrium, the resultant moment about any point is zero
6
Q
centre of gravity
A
the point on an object through which the objects entire weight of the object may be considered to act
7
Q
equilibrium
A
the state of an object when in rest or in uniform motion. the resultant force on a body in equilibrium is zero and the resultant moment is zero
