Moments Flashcards
Diagrams & Tilting (8 cards)
1
Q
Define what a moment is and it’s formula
A
- Rotational effect of a force
- Perpendicular distance x Force
2
Q
Resultant force in equilibrium
A
0N
3
Q
Resultant moment in equilibrium
A
0Nm
4
Q
In equilibrium, Σ (clockwise) moment equals…
A
Σ (anti - clockwise)
5
Q
What does it mean when “ a rod lies on a support”
A
theres a reaction force (rA or rB) perpendicular to the rod at that exact point
6
Q
In uniform rods, where does the centre of mass lay and what happens to the length?
A
- Centre of mass lies at the midpoint
- Length is split
7
Q
What happens when you’re “tilting about A”
A
rB = 0
8
Q
What happens when you’re “tilting about B”
A
rA = 0
