A Solid Cylinder of Mass M = 3 Kg and Radius

question 57

Multiple Choice

A solid cylinder of mass m = 3 kg and radius r = 12 cm is initially rotating about its central axis with angular frequency $\omega$ = 25 radians/s.How many revolutions does it make after a retarding force of 0.5 N is applied to the outer surface?

• A)0.018 rev
• B)0.11 rev
• C)0.036 rev
• D)0.0090 rev
• E)0.072 rev

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Definitions:

Start Winding

Winding on a motor that provides additional torque during startup to help the motor reach operating speed.

Split-phase Motor

An AC electric motor that uses a split-phase induction to create a rotating magnetic field for starting torque.

Stator Core

The stationary part of an electric generator or motor, especially the magnetic core, around which the winding is arranged.

Small Wire

A conductor of electricity characterized by a relatively small cross-sectional area, affecting its resistance and current-carrying capacity.