14. Consider the motion of an elevator as it moves upwards between two floors of a building. The elevator's motion can be divided into three stages. During stage 1, the elevator starts at rest, but uniformly accelerates until it reaches a maximum speed of 1.2 m/s in a time of 0.8 s. During stage 2, the elevator travels with a constant speed of 1.2 m/s for a time of 5 s. During stage 3, the elevator uniformly decelerates until it comes to rest in a time of 1.5 s. Suppose a 72-kilogram man is standing in the elevator. a) Calculate the normal force exerted by the elevator floor on the man during each stage of the elevator’s motion. b) Suppose the man is standing on a spring scale placed on the floor of the elevator. What mass would the scale register during each stage of the elevator's motion? Hint: The spring scale is similar to the bathroom scales you may use to measure your weight at home. These scales actually measure the normal force on your body. Under ordinary circumstances, the normal force on your body is equal in magnitude to the weight of your body. However, in an elevator that is accelerating, this is no longer true.
14. Consider the motion of an elevator as it moves upwards between two floors of a building. The elevator's motion can be divided into three stages. During stage 1, the elevator starts at rest, but uniformly accelerates until it reaches a maximum speed of 1.2 m/s in a time of 0.8 s. During stage 2, the elevator travels with a constant speed of 1.2 m/s for a time of 5 s. During stage 3, the elevator uniformly decelerates until it comes to rest in a time of 1.5 s. Suppose a 72-kilogram man is standing in the elevator. a) Calculate the normal force exerted by the elevator floor on the man during each stage of the elevator’s motion. b) Suppose the man is standing on a spring scale placed on the floor of the elevator. What mass would the scale register during each stage of the elevator's motion? Hint: The spring scale is similar to the bathroom scales you may use to measure your weight at home. These scales actually measure the normal force on your body. Under ordinary circumstances, the normal force on your body is equal in magnitude to the weight of your body. However, in an elevator that is accelerating, this is no longer true.
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
Related questions
Question
Practice Pack
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
Includes step-by-step video
Learn your way
Includes step-by-step video
Step by step
Solved in 2 steps with 1 images
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.Recommended textbooks for you
College Physics
Physics
ISBN:
9781305952300
Author:
Raymond A. Serway, Chris Vuille
Publisher:
Cengage Learning
University Physics (14th Edition)
Physics
ISBN:
9780133969290
Author:
Hugh D. Young, Roger A. Freedman
Publisher:
PEARSON
Introduction To Quantum Mechanics
Physics
ISBN:
9781107189638
Author:
Griffiths, David J., Schroeter, Darrell F.
Publisher:
Cambridge University Press
College Physics
Physics
ISBN:
9781305952300
Author:
Raymond A. Serway, Chris Vuille
Publisher:
Cengage Learning
University Physics (14th Edition)
Physics
ISBN:
9780133969290
Author:
Hugh D. Young, Roger A. Freedman
Publisher:
PEARSON
Introduction To Quantum Mechanics
Physics
ISBN:
9781107189638
Author:
Griffiths, David J., Schroeter, Darrell F.
Publisher:
Cambridge University Press
Physics for Scientists and Engineers
Physics
ISBN:
9781337553278
Author:
Raymond A. Serway, John W. Jewett
Publisher:
Cengage Learning
Lecture- Tutorials for Introductory Astronomy
Physics
ISBN:
9780321820464
Author:
Edward E. Prather, Tim P. Slater, Jeff P. Adams, Gina Brissenden
Publisher:
Addison-Wesley
College Physics: A Strategic Approach (4th Editio…
Physics
ISBN:
9780134609034
Author:
Randall D. Knight (Professor Emeritus), Brian Jones, Stuart Field
Publisher:
PEARSON