Amobile phone has a small motor with an eccentricmass used for vibrator mode. The location of theeccentric mass on motor with respect to center ofgravity (CG) of the mobile and the rest of thedimension of the mobile phone are shown. Themobile is kept on a flat horizontal surface.CGMotor10 cmEccentricMass6 cm3 cmGiven in addition that the eccentric mass = 2grams, eccentricity 2.19 mm, mass of themobile = 90 grams, g= 9.81 m/s?. Uniformspeed of the motor in RPM for which the mobilewill get just lifted off the ground at the end Qis approximately

Given data; as given in fig, Eccnetric mass (m)= 2 geccentricity= 2.19 mmmass of mobile=90 gg=9.81…

Answered: speed of the motor in RPM for which the…

Engineering

Mechanical Engineering

speed of the motor in RPM for which the mobile will get just lifted off the ground at the end Q is approximately

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Question

Amobile phone has a small motor with an eccentric
mass used for vibrator mode. The location of the
eccentric mass on motor with respect to center of
gravity (CG) of the mobile and the rest of the
dimension of the mobile phone are shown. The
mobile is kept on a flat horizontal surface.
CG
Motor
10 cm
Eccentric
Mass
6 cm
3 cm
Given in addition that the eccentric mass = 2
grams, eccentricity 2.19 mm, mass of the
mobile = 90 grams, g= 9.81 m/s?. Uniform
speed of the motor in RPM for which the mobile
will get just lifted off the ground at the end Q
is approximately

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