In a Lab Experiment, a Student Brings Up the Rotational

question 91

Multiple Choice

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

• A) 0.0425 Nm
• B) 0.159 Nm
• C) 0.0787Nm
• D) 0.000278 Nm
• E) 0.0000136 Nm

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Definitions:

Schematic

A simplified representation of a system or circuit that uses symbols and lines to illustrate structure or function without showing actual layout.

Thread Representation

A standardized way of depicting the thread on fasteners or tapped holes in technical drawings, indicating form, pitch, and diameter.

Set Screws

Fasteners designed to pass through a threaded hole in one object to tighten against another, securing them together without protruding from the surface.

International Organization for Standardization

An independent, non-governmental international organization that develops standards to ensure quality, safety, and efficiency of products, services, and systems.