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In the figure below, a wheel of radius 0.20 m is mounted on a frictionless horizontal axle.

In the figure below, a wheel of radius 0.20 m is mounted on a frictionless horizontal axle. A massless cord is wrapped around the wheel and attached to a 2.0 kg box that slides on a frictionless surface inclined at angle θ = 20° with the horizontal. The box accelerates down the surface at 2.0 m/s2. What is the rotational inertia of the wheel about the axle? kg·m2

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