A $12\mathrm{.}0kg$ box resting on a horizontal, frictionless surface is attached to a $5\mathrm{.}00kg$ weight by a thin, light wire that passes over a frictionless pulley $($Figure $1).$ The pulley has the shape of a uniform solid disk of mass $1\mathrm{.}40kg$ and diameter $0\mathrm{.}500m.$

After the system is released, find the tension in the vertical segmen Express your answer with the appropriate units.

Suntrit

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Part C

After the system is released, find the acceleration of the box.

Express your answer with the appropriate units.

$a_y=$

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