definitions Flashcards
(5 cards)
1
Q
centre of mass
A
the mean position of the mass in an object
2
Q
centre of gravity
A
the point at where there is no moment acting on an object due to its weight
3
Q
Principal of Moments
A
if the anticlockwise and clockwise moments are in equilibrium, there will be no resultant moment
4
Q
Conservation of Momentum
A
in a closed system, momentum before = momentum after
5
Q
Recoil
A
a movement backwards caused by a force or impact caused by momentum
