93. We choose positive coordinate directions so that each is accelerating positively,
which will allow us to set
a
box
=
R
α
(for simplicity, we denote this as
a
). Thus, we choose
downhill positive for the
m
= 2.0 kg box and (as is conventional) counterclockwise for
positive
sense of wheel rotation. Applying Newton’s second law to the box and (in the
form of Eq. 1045) to the wheel, respectively, we arrive at the following two equations
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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

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