5. turning effects of forces Flashcards
1
Q
moment
A
the moment of a force/torque about a pivot is the product of the force F and the perpendicular distance d from the pivot to the line of action.
2
Q
principle of moments
A
when a body is in equilibrium, the sum of clockwise moments about a pivot is equal to the sum of anticlockwise moments about the same pivot.
3
Q
centre of gravity
A
an imaginary point where the entire weight of the object seems to act
4
Q
stability
A
measure of an object’s ability to return to its original position
