1
DISCUSSION PROBLEM [5.1]
:
The “friction” equation
r
f
= μ
r
N
is
not
a vector equation.
Why not?
DISCUSSION PROBLEM [5.1]
:
... answer ...
The “friction” equation
r
f
= μ
r
N
is
not
a vector equation because
r
f
is not parallel to
r
N
.

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