U7 Videos FP 8.1.2

What is the moment of inertia of a system composed of three 20.0-gram masses, each 9.4 cm from the axis of rotation?

• 5300 g·cm^2

• 188 g·cm^2

• 564 g·cm^2

• 1764 g·cm^2

On what factor does the moment of inertia of an object primarily depend?

• Its angular velocity.

• Its rotational kinetic energy.

• Its mass distribution and the axis of rotation.

• The length of the strings holding the masses.

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What is the moment of inertia of a system composed of three 20.0-gram masses, each 9.4 cm from the axis of rotation, expressed in SI units?

• 5.3 x 10^-4 kg·m^2

• 5.3 x 10^-2 kg·m^2

• 1.88 x 10^-4 kg·m^2

• 1.88 x 10^-2 kg·m^2

A system of three 20.0-gram masses, each 9.4 cm from the axis of rotation, rotates at 152 revolutions per minute. What is the rotational kinetic energy of this system?

• 0.067 J

• 67 J

• 0.00053 J

• 0.196 J