P3. Forces & Pressure Flashcards
1
Q
Principle of Moments
A
If an object is in equilibrium, the sum of the clockwise moments about any point is equal to the sum of the anticlockwise moments about that point
2
Q
Centre of mass
A
The point at which all the mass of the object acts
3
Q
Hooke’s Law
A
The extension of the spring is directly proportional to the load applied, provided the elastic limit is not reached
4
Q
Pressure
A
Force per unit area
5
Q
Boyle’s Law
A
The pressure of a (fixed mass of) gas is inversely proportional to the volume at constant temperature
