This preview shows page 1. Sign up to view the full content.
5.37:
a) The magnitude of the normal force is
.
sin
θ
mg
F
+
The horizontal component
of
θ
cos
,
F
F
must balance the frictional force, so
);
sin
(
cos
k
θ
mg
μ
F
F
+
=
θ
solving for
F
gives
θ
μ
θ
mg
μ
sin
cos
k
k

=
F
b) If the crate remains at rest, the above expression, with
This is the end of the preview. Sign up
to
access the rest of the document.