M2 - Unit 4 Flashcards
0
Q
How to find the moment of a force about a point?
A
A moment (Nm) is the perpendicular distance (d) x the magnitude of the force (F)
1
Q
How do the clockwise and anticlockwise moments relate to each other if a rigid object is in equilibrium?
A
clockwise moments about any point = anticlockwise moments
2
Q
Where is the centre of mass of a rigid object with uniform density.
A
At the centre of symmetry.
3
Q
How to remove unknown forces from an equation?
A
Taking moments about the point on a line of action.
4
Q
When an object is in equilibrium, how are the upward and downward forces related (without taking distance into account)
A
They are equal.
