Modelling assumptions Flashcards
1
Q
Particle
A
mass of object concentrated at a single point
air resistance and rotational forces ignored
2
Q
Rod
A
mass concentrated along a line
no thickness
does not bend
3
Q
Lamina
A
mass distributed across a flat surface
4
Q
Uniform body
A
mass acts through centre of mass
5
Q
Light object
A
object has effective zero mass
tension same at both ends of the string
6
Q
Inextensible string
A
acceleration is the same of both connected objects
7
Q
Smooth surface
A
no friction acting
8
Q
wire
A
treated as one dimensional
9
Q
smooth light pulley
A
pulley has no mass
tension either side of pulley the same
10
Q
Bead
A
moves freely along wire or string
tension either side the same
11
Q
peg
A
dimensionless and fixed
can be rough or smooth
