YR 2 Topic 4 (mechanics) Flashcards
1
Q
for object to be in equilibrium
A
sum of the forces (resultant force) must be 0
2
Q
moments is
A
the study of the turning effect
3
Q
pivot
A
point about which the turning takes place
4
Q
moment of a force about P
A
force x perpendicular distance from P
5
Q
resolve force
A
force is the hypotenuse
6
Q
resolve distance
A
distance is the hypotenuse
7
Q
moment of a force
A
magnitude of force x perpendicular distance of force from pivot
8
Q
forces are co-planar
A
act in the same plane
9
Q
for rigid body to be in equilibrium
A
resultant force in any direction is 0N and resultant moment about any point 0Nm
10
Q
uniform rod
A
weight acts at the midpoint
11
Q
non uniform rod
A
weight doesnt act at centre
