Moments Flashcards
1
Q
What is a moment?
A
A turning force, it acts around a pivot or fulcrum. It turns clockwise or anti-clockwise.
2
Q
What is the equation for the moment of a force?
A
Moment = force (N) x distance (from the pivot cm/m)
3
Q
What are moments measured in?
A
Newton centimetres (ncm) or newton metres.
4
Q
What does equilibrium mean?
A
When a system is equilibrium the sum of the clockwise moments about a pivot equals the sum of the anti clockwise moments.
This is called the principle of moments.
5
Q
What are levers?
A
Simple machines; they use moments to move loads.
