1A.4 moments Flashcards
1
Q
what is the moment of a force
A
the tendency to cause rotations
2
Q
moment =
A
moment (Nm) = force (N) X distance (m)
3
Q
if the resultant force is zero what does that tell us
A
that the object is at equilibrium so it will remain stationary or keep moving at a constant velocity
4
Q
what is the principle of moment
A
the total of all the moments trying to turn the object clockwise is equal to the total moments trying to turn the object anti-clockwise. making it at equilibrium so it will stay stationary or keep rotating at the same speed
5
Q
what is the centre of gravity
A
it is the place where all the weight forces trying to pull the object down come from
6
Q
how do we find the centre of gravity in symmetrical shapes
A
it is where all the lines of symmetry intersect
