Def's of all topics up to 11 Flashcards
1
Q
moments
A
the product of the force and the perpendicular distance from the pivot to the line of action of the force.
2
Q
Principle of moments
A
clockwise moments equal the anti-clockwise moments
3
Q
Newtons first law
A
if a body is at rest, it remains at rest unless a resultant force acts on it.
4
Q
Newtons second law
A
The rate of change of momentum of an object is directly proportional to the resultant force.
5
Q
Newtons third law
A
if body a exerts a force on body b, body b will exert an equal and opposite force on body a
6
Q
emf
A
emf of a cell is the amount of chemical energy converted to electrical energy when 1 coulomb of charge passes through the cell,
