A Thin, Massless String Is Wrapped Around a 0

question 25

Multiple Choice

A thin, massless string is wrapped around a 0.25m radius grindstone supported by bearings that produce negligible frictional torque. A steady tension of 20 N in the string causes the grindstone to move from rest to a speed of 60 rad/s in 12s. The moment of inertia of the grindstone is

• A) 1.0 kg · m²
• B) 2.0 kg · m²
• C) 3.0 kg · m²
• D) 4.0 kg · m²
• E) 5.0 kg · m²

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Definitions:

2007

A year marked by significant global events such as the beginning of the financial crisis and advancements in technology like the introduction of the first iPhone.

Pentagon

The United States Department of Defense's headquarters, a five-sided building located in Arlington, Virginia.