Q1) An elevator car has a mass of (1600 kg) and is carrying passengers having a combined mass of (200 kg). A constant friction force of (4000 N) retards its motion upward, as shown in figure. (A) What power delivered by the motor is required to lift the elevator car at a constant speed of 3 m/s? (B) What power must the motor deliver at the instant the speed of the elevator is v if the motor is designed to provide the elevator car with an upward acceleration of 1 m/s2? Motor
Q1) An elevator car has a mass of (1600 kg) and is carrying passengers having a combined mass of (200 kg). A constant friction force of (4000 N) retards its motion upward, as shown in figure. (A) What power delivered by the motor is required to lift the elevator car at a constant speed of 3 m/s? (B) What power must the motor deliver at the instant the speed of the elevator is v if the motor is designed to provide the elevator car with an upward acceleration of 1 m/s2? Motor
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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![Q1) An elevator car has a mass of (1600 kg) and is carrying passengers having a
combined mass of (200 kg). A constant friction force of (4000 N) retards its motion
upward, as shown in figure.
(A) What power delivered by the motor is required to lift the elevator car at a
constant speed of 3 m/s?
(B) What power must the motor deliver at the instant the speed of the elevator is v if
the motor is designed to provide the elevator car with an upward acceleration of 1
m/s2?
Motor
Mg](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F72e48bc5-684b-46a0-9229-763c0ae19425%2F14dcf262-bffb-40e5-bed5-58e04683e904%2F1yqnfus_processed.jpeg&w=3840&q=75)
Transcribed Image Text:Q1) An elevator car has a mass of (1600 kg) and is carrying passengers having a
combined mass of (200 kg). A constant friction force of (4000 N) retards its motion
upward, as shown in figure.
(A) What power delivered by the motor is required to lift the elevator car at a
constant speed of 3 m/s?
(B) What power must the motor deliver at the instant the speed of the elevator is v if
the motor is designed to provide the elevator car with an upward acceleration of 1
m/s2?
Motor
Mg
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