Turning effect of forces Flashcards
1
Q
Principal of Moments
A
For an object in equilibrium, the sum of the clockwise moments about any point is equal to the sum of the anticlockwise moments about the same point.
2
Q
Fnet = 0
A
Total upward forces = Total downward forces
3
Q
Define Stability
A
Stability is the ability of the object to return to its original position after it has been tilted slightly
4
Q
Moment formula
A
force x perpendicular distance
5
Q
Transitional Equilibrium
A
The resultant force on the object must be zero.
6
Q
Rotational Equilibrium
A
The CW moments about any point = The ACW moments about the same point
7
Q
Stability can be increased by?
A
Increasing the base area or Lowering its centre of gravity ( by having a heavy base )
