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62. The notation and coordinates are as shown in Fig. 126 in the textbook.
Here, the
ladder's center of mass is halfway up the ladder (unlike in the textbook figure).
Also, we
label the
x
and
y
forces at the ground
f
s
and
F
N
, respectively.
Now, balancing forces, we
have
Σ
F
x
= 0
¡
f
s
=
F
w
Σ
F
y
= 0
¡
F
N
= mg
Since
f
s
= f
s
, max
, we divide the equations to obtain
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This note was uploaded on 05/17/2011 for the course PHY 2049 taught by Professor Any during the Spring '08 term at University of Florida.
 Spring '08
 Any
 Physics, Center Of Mass, Force, Mass

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