Rotational Dynamics About a Fixed Axis: a Solid Uniform Sphere

question 75

Multiple Choice

Rotational dynamics about a fixed axis: A solid uniform sphere of mass 1.85 kg and diameter 45.0 cm spins about an axle through its center. Starting with an angular velocity of 2.40 rev/s, it stops after turning through 18.2 rev with uniform acceleration. The net torque acting on this sphere as it is slowing down is closest to

• A) 0.00593 N ∙ m.
• B) 0.0372 N ∙ m.
• C) 0.0466 N ∙ m.
• D) 0.0620 N ∙ m.
• E) 0.149 N ∙ m.

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Definitions:

Equilibrium Price

The market price at which the supply of an item matches its demand, leading to economic stability in the market.

Supply Curve

An illustrative diagram depicting the link between the cost of an item and the volume merchants are ready to provide.

Supply Curve

A graphical representation showing the correlation between the price of a good or service and the amount that suppliers are willing to produce and sell at each price level.

Quantity Demanded

The aggregate quantity of a product or service that buyers are ready and able to buy at a specific price point during a certain timeframe.