This preview shows page 1. Sign up to view the full content.
(c) Now, the applied force
F
→
indirectly increases the maximum possible value of friction
(since its
y
component causes a reduction in the normal force) as well as directly
opposing the friction force itself (because of its
x
component).
The normal force in this
case turns out to be
F
N
=
mg
+
F
sin
θ
,
where
= 60º, so that the horizontal equation becomes
F
cos
–
f
s,max
=
F
cos
–
μ
s
(
mg
+
F
sin
θ
) = 0
320 N.
F
¡
=
67. (a) To be “on the verge of sliding” means the applied force is equal to the maximum
possible force of static friction (Eq. 61, with
F
N
=
mg
in this case):
This is the end of the preview. Sign up
to
access the rest of the document.
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, Force, Friction

Click to edit the document details