A cylinder with rotational inertia I1 = 2.6 kg · m^2 rotates clockwise about a vertical...

A cylinder with rotational inertia I₁ = 2.6 kg · m^2 rotates clockwise about a vertical axis through its center with angular speed ω₁ = 5.8 rad/s. A second cylinder with rotational inertia I₂ = 1.3 kg · m2 rotates counterclockwise about the same axis with angular speed ω₂ = 6.6 rad/s. If the cylinders couple so they have the same rotational axis, what is the angular speed of the combination (in rad/s)?

What percentage of the original kinetic energy is lost to friction?

Expert Solution

genius_generous answered 1 year ago

A hollow sphere of radius 0.170 m, with rotational inertia I = 0.0150 kg

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