An ice skater with rotational inertia I₀ spins with angular speed ω₀. She pulls in her arms and her angular speed becomes 3ω₀. Her new rotational inertia is:

The rotational inertia of a disk about its axis is 0.60 kg·m². A 3.0 kg point mass is attached at the rim, 0.20 m from the axis. The new rotational inertia is:

An optimal tariff is defined as the tariff rate that:

Four identical particles, each of mass 1.5 kg, are located at x = ±2.0 m and x = ±1.0 m on the x-axis. Their y-coordinates are all zero. The rotational inertia about the y-axis is:

A student is spinning on a frictionless turntable with arms extended. When the student pulls the arms inward:

To increase the rotational inertia of a solid disk about its central axis without changing its mass, you should:

A wheel starts from rest and has constant angular acceleration 3.0 rad/s². The time required to rotate through 8 revolutions is closest to:

According to the factor-price equalization theorem, free trade between any two countries equalizes

The rotational inertia of a wheel about its axle does not depend on its:

If a small country imposes a tariff on imported motorcycles, the world price of motorcycles will_________ and the domestic price of motorcycles will