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AP PHYSICS LARGE GROUP 11405

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Title: AP PHYSICS LARGE GROUP 11405


1
AP PHYSICS LARGE GROUP 11/4/05
  • TORQUES

2
Good News!!
New Shipment!
3
(No Transcript)
4
Equilibrium of Torques
Plank 2m system2
5
Nov 3
E.J. Baker!
YESTERDAY!
6
H.W. 7 4-34
2 m
7
H.W. 7 4-34
T2
Rw ?
T1
X
AXIS
RT
mg
8
H.W. 7 4-36 (modified)
i.p. torque 4-36
9
H.W. 7 4-41
10
HW7 4-41
11
HW7 4-41
12
HW7 4-41
All forces pass through axis.
T F x r
r 0
T 0
x
13
HW7 4-41
W
H 2.5 W
½ H 1.25 W
H
.5 W
tan Q
1.25 W
½ H
Q
tan Q .4
Find Q
½ W
Q 22o
Q
14
HW7 4-41
15
HW7 4-41
Q gt 22o
Rotational acceleration
x
Block tips over!!
16
HW7 4-41 b
17
HW7 4-41 b
18
HW7 4-41 b
19
H.W. 7 4-39
W 720 N
  • Find
  • Tension in Achill
  • H and V

N
20
(No Transcript)
21
H.W. 7 4-38
22
H.W. 7 4-38
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