Chapter 8.2 Flashcards
Modelling assumptions
1
Q
particle
A
- rotational forces and air resistance is ignored
- mass of the object is focused at a single point
2
Q
rod
A
- no thickness
- rigid
- mass is concentrated along a line
3
Q
lamina
A
- ignore thickness
- 2D
4
Q
uniform body
A
mass is distributed evenly
5
Q
light body
A
- mass is ignored
- tension is the same at both ends
6
Q
inextensible string
A
string does not stretch
7
Q
smooth surface
A
- ignore friction
8
Q
rough surface
A
- frictional force is important
9
Q
wire
A
- rigid
- one-dimensional
10
Q
smooth and light pulley
A
- ignore mass
- tension is the same at both sides
11
Q
bead
A
- moves freely along a thread
- tension is the same at both sides
12
Q
peg
A
- ignore dimensions
13
Q
air resistance
A
- usually ignored
14
Q
gravity
A
- 9.8 ms-2
