Turning Force Centre Of Gravity Flashcards
1
Q
A lever
A
Is any rigid body which is free to turn about a fixed point called the fulcrum
2
Q
Examples of levers are
A
Door, pliers, scissors
3
Q
Law of the lever
A
States that when a lever is balanced, the total clockwise moments equal the total anti clockwise moments.
4
Q
Centre of gravity
A
Of an object is the point through which all the weight of the object appears to act
5
Q
Stable equilibrium
A
Is present if when an object is slightly tilted.
6
Q
Unstable equilibrium
A
Is present when an object is slightly tilted, it’s centre of gravity is lowered and it takes a new position when released.
7
Q
Neutral equilibrium
A
When an object is moved its center of gravity is neither raised or lowered.
8
Q
Moment
A
The moment of a force is the turning effect of a force.
