PROBLEM 15.5 A small grinding wheel is attached to the shaft of an electric motc which has a rated speed of 3600 rpm. When the power is turne on, the unit reaches its rated speed in 5 s, and when the power i turned off, the unit coasts to rest in 70 s. Assuming uniforml accelerated motion, determine the number of revolutions that th motor executes (a) in reaching its rated speed, (b) in coastin to rest.

PROBLEM 15.5 A small grinding wheel is attached to the shaft of an electric motc which has a rated speed of 3600 rpm. When the power is turne on, the unit reaches its rated speed in 5 s, and when the power i turned off, the unit coasts to rest in 70 s. Assuming uniforml accelerated motion, determine the number of revolutions that th motor executes (a) in reaching its rated speed, (b) in coastin to rest.

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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Conservation of Energy

In physics, the rule of the conservation of energy states that energy doesn’t disappear from the atmosphere; instead, it changes its form from one type to another. Energy is one of the most important physical quantities in nature, and it cannot be created or destroyed — only transformed.

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applied mechanics 2

PROBLEM 15.5
A small grinding wheel is attached to the shaft of an electric motc
which has a rated speed of 3600 rpm. When the power is turne
on, the unit reaches its rated speed in 5 s, and when the power i
turned off, the unit coasts to rest in 70 s. Assuming uniforml
accelerated motion, determine the number of revolutions that th
motor executes (a) in reaching its rated speed, (b) in coastin
to rest.

Branch of science that deals with the stationary and moving bodies under the influence of forces.

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