Forces In Action Flashcards
(10 cards)
1
Q
Define centre of mass
A
The centre of mass is the point in which a force acting through it would cause acceleration but no rotation
2
Q
Define centre of gravity
A
The point from which the weight of the object acts from
3
Q
Define the principle of moments
A
For a body in rotational equilibrium anti-clockwise moments round a point equal clockwise moment about the same point.
4
Q
A couple definition
A
Two force that are parallel but all no along different lines of action.
5
Q
What is torque?
A
Fd
6
Q
Density symbol
A
ρ (tho)
7
Q
Density=
A
Mass/unit volume
8
Q
Pressure define?
A
Force exerted over unit area
9
Q
Pressure exerted by a colour of fluid
A
ρgh
10
Q
Archimedes principle
A
The up thrust exerted on a body immersed in a cloud is equal to the weight of fluid distances
