In a Laboratory Experiment,a Student Brings Up the Rotational Speed

question 59

Multiple Choice

In a laboratory experiment,a student brings up the rotational speed of a flywheel to 30.0 rpm.She then allows it to slow down on its own,and counts 240 revolutions before the apparatus uniformly comes to a stop.The moment of inertia of the flywheel is 0.0850 kg ∙ m².What is the magnitude of the retarding torque on the flywheel?

• A)0.0425 N ∙ m
• B)0.159 N ∙ m
• C)0.0787 N ∙ m
• D)0.000278 N ∙ m
• E)0.0000136 N ∙ m

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Definitions:

Underground Stem

Plant structures that grow below the soil surface, serving as storage organs and helping in asexual reproduction; examples include rhizomes and tubers.

Detachable Small Plants

Plants that can naturally or artificially separate from the parent plant to propagate asexually and form new individual plants.

Parent Plant

The original plant from which cuttings, seeds, or other reproductive material is taken for the purpose of propagation.

Enlarged Underground Stem

A specialized plant structure, such as a tuber or rhizome, that stores nutrients and helps in vegetative reproduction.