This preview shows page 1. Sign up to view the full content.
Engineering Mechanics  Dynamics
Chapter 16
Problem 1611
The disk is originally rotating at angular velocity
ω
0
. If it is subjected
to a constant angular acceleration
α
,
determine the magnitudes of
the velocity and the
n
and
t
components of acceleration of point
B
just after the wheel undergoes a rotation
θ
.
Given:
rev
2
π
rad
=
6
rad
s
2
=
r
1.5 ft
=
0
8
rad
s
=
2 rev
=
Solution:
ωω
0
2
2
αθ
+
=
14.66
rad
s
=
v
B
r
=
v
B
22
ft
s
=
a
Bt
r
=
a
Bt
9
ft
s
2
=
a
Bn
r
2
=
a
Bn
322
ft
s
2
=
*Problem 1612
The anemometer measures the speed of
the wind due to the rotation of the three
cups. If during a time period
This is the end of the preview. Sign up
to
access the rest of the document.
Unformatted text preview: t 1 a wind gust causes the cups to have an angular velocity = ( At 2 + B ) , determine (a) the speed of the cups when t = t 2 , (b) the total distance traveled by each cup during the time period t 1 , and (c) the angular acceleration of the cups when t = t 2 . Neglect the size of the cups for the calculation. Given: t 1 3 s = t 2 2 s = r 1.5 ft = A 2 1 s 3 = B 3 1 s = 402...
View
Full
Document
This note was uploaded on 08/16/2011 for the course EGN 3321 taught by Professor Christianfeldt during the Spring '08 term at University of Central Florida.
 Spring '08
 ChristianFeldt
 Dynamics

Click to edit the document details