download - Kckong.info

Example 19.2
Solution
Free Body Diagrams
The loading causes the disk to rotate clockwise.
The moment of inertia of the disk about its fixed axis
of rotation is
Copyright © 2010 Pearson Education South Asia Pte Ltd
Example 19.2
Solution
Principle of Impulse and Momentum
We have
I
m(
v
A
m(
v
1
Ax
Ay
)
)
1
1
0
(2)
m(
v
0 Ay(2)
100(2) 50(2) 0
t
t
1
2
M
t
A
t
t
1
t
1
A
2
0 6(2) [50(2)](0.25) 0.31855
2
x
dt
F
F
y
x
dt
dt
I
A
0
m(
v
2
Ax
Ay
)
)
2
2
2
Copyright © 2010 Pearson Education South Asia Pte Ltd