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Question
A thin, light wire is wrapped
around the rim of a wheel (Fig.). The
wheel rotates without friction about a stationary
horizontal axis that passes through the center
of the wheel. The wheel is a uniform disk
with radius R = 0.280 m. An object of mass
m = 4.20 kg is suspended from the free end of
the wire. The system is released from rest and
the suspended object descends with constant acceleration.
If the suspended object moves downward
a distance of 3.00 m in 2.00 s, what is the
mass of the wheel?
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