![University Physics with Modern Physics (14th Edition)](https://www.bartleby.com/isbn_cover_images/9780321973610/9780321973610_largeCoverImage.gif)
A loaded elevator with very worn cables has a total mass of 2200 kg, and the cables can withstand a maximum tension of 28,000 N. (a) Draw the free-body force diagram for the elevator. In terms of the forces on your diagram, what is the net force on the elevator? Apply Newton’s second law to the elevator and find the maximum upward acceleration for the elevator if the cables are not to break. (b) What would be the answer to part (a) if the elevator were on the moon, where g = 1.62 m/s2?
![Check Mark](/static/check-mark.png)
Want to see the full answer?
Check out a sample textbook solution![Blurred answer](/static/blurred-answer.jpg)
Chapter 4 Solutions
University Physics with Modern Physics (14th Edition)
Additional Science Textbook Solutions
Introduction to Electrodynamics
The Cosmic Perspective Fundamentals (2nd Edition)
College Physics: A Strategic Approach (3rd Edition)
Conceptual Physical Science (6th Edition)
College Physics
College Physics: A Strategic Approach (4th Edition)
- You have gone skiing at the Poconos. You (mass 45 Kg) are being pulled up a 300 snow-covered slope by a tow rope at constant speed 0.5 m/s. Ignore friction. Calculate the normal force on you and the tension in the rope. (Hint: Draw a force diagram, i.e., all the forces acting on you.) a) Normal force = 382 N, Tension = 220.5 N b) Normal force = 220.5 N, Tension = 382 Narrow_forwardConsider your mass to be 60 kg for the purpose of this problem. a) You are on an elevator that is accelerating upvertically at 3.1 m/s2. What is the force that the elevatorexerts on your body? Is this force pointing up or down? If you were standing on a scale on the floor of the elevator, what weight would the scale indicate? b) Now consider that the elevator is accelerating downvertically at 3.1 m/s2.What is the force that the elevatorexerts on your body? Is this force pointing up or down? If you were standing on a scale on the floor of the elevator, what weight would the scale indicate? c) Now consider that the elevator is accelerating downvertically at 9.8 m/s2.What is the force that the elevator exerts on your body? Is this force pointing up or down? If you were standing on a scale on the floor of the elevator, what weight would the scale indicate?arrow_forwardSomeone is standing on a scale inside an elevator. When the elevator is accelerating upward, the scalereads 850 N; when the elevator is accelerating downward at the same acceleration, the scale reads 800N.Find the acceleration of the elevator, a = ?Find the mass of the person.Find the weight of this person. I know that Fn = mg + ma for upward and Fn = mg - ma for downward, but I am not sure how to find the middle ground that would be the acceleration?arrow_forward
- You walk into an elevator, step onto a scale, and push the “up” button. You also recall that your normal weight is 625 N. Start answering each of the following questions by drawing a free body diagram. (a) If the elevator has an acceleration of magnitude 2.5 m/s2 , what does the scale read? (b) If you start holding a 3.85-kg package by a light vertical string, what will be the tension in this string once the elevator begins accelerating?arrow_forwardThe question is stated that: A woman stands on a scale in a moving elevator. Her mass is 60.0 kg, and the combined mass of the elevator and scale is an additional 815 kg. Starting from rest, the elevator accelerates upward. During the acceleration, the hoisting cable applies a force of 9410 N. What does the scale read during the acceleration? I'm unsure about how to draw the free-body diagram and as well as solving the equation. If there's any tips regarding this question it will greatly help! Thanks!arrow_forwardA pulley has a string holding two masses which both hang straight down. If the mass on the left is 2.2 kg and the mass right is 3.8 kg, find the tension in the string. Your Answer:arrow_forward
- You bring a bathroom scale onto an elevator and press "up". Your mass is 65 kg. If the bathroom scale reads 750 N, (a) what is the acceleration of the elevator? You then press down and the acceleration downward is of the same magnitude. (b) While accelerating downward, you hold a small mass of 100 g attached to a string. What is the tension in the string? This elevator is in the new BU Data Science building where g = 10 m/s². Your work should include free body diagramsarrow_forwardA 2140 kg car traveling to the west at 17.1 m/s slows down uniformly. How long would it take the car to come to a stop if the force on the car is 8560 N to the east? Let East be positive.Answer in units of s. What is the car’s displacement during the time it takes to stop?Answer in units of m.arrow_forwardA cabinet of mass 5.8 kg is at rest on a ramp as shown. What is the magnitude of the friction force on the cabinet, in Newtons? The coefficients of friction between the cabinet and ramp are μs = 0.850 and μk = 0.750. Use g = 10 m/s2. (Hint: what type of friction is it?)arrow_forward
- An elevator car has two equal masses attached to the ceiling as shown. (Assume m = 2.85 kg.) T (a) The elevator ascends with an acceleration of magnitude 1.00 m/s2. What are the tensions in the two strings? (Enter your answers in N.) T2 = (b) The maximum tension the strings can withstand is 68.9 N. What is the maximum acceleration of the elevator so that a string does not break? (Enter the magnitude in m/s2.) m/s?arrow_forwardA dockworker loading crates on a ship finds that a 20 kg crate, initially at rest on a horizontal surface, requires a 79 N horizontal force to set it in motion. However, after the crate is in motion, a horizontal force of 50 N is required to keep it moving with a constant speed. Find the coefficients of static and kinetic friction between crate and floor.arrow_forwardAn elevator car has two equal masses attached to the ceiling as shown. (Assume m = 3.10 kg.) T₁ II m T₂ m (a) The elevator ascends with an acceleration of magnitude 2.00 m/s². What are the tensions in the two strings? (Enter your answers in N.) T₁ = T₂ N N (b) The maximum tension the strings can withstand is 78.9 N. What is the maximum acceleration of the elevator so that a string does not break? (Enter the magnitude in m/s².) m/s²arrow_forward
- College PhysicsPhysicsISBN:9781305952300Author:Raymond A. Serway, Chris VuillePublisher:Cengage LearningUniversity Physics (14th Edition)PhysicsISBN:9780133969290Author:Hugh D. Young, Roger A. FreedmanPublisher:PEARSONIntroduction To Quantum MechanicsPhysicsISBN:9781107189638Author:Griffiths, David J., Schroeter, Darrell F.Publisher:Cambridge University Press
- Physics for Scientists and EngineersPhysicsISBN:9781337553278Author:Raymond A. Serway, John W. JewettPublisher:Cengage LearningLecture- Tutorials for Introductory AstronomyPhysicsISBN:9780321820464Author:Edward E. Prather, Tim P. Slater, Jeff P. Adams, Gina BrissendenPublisher:Addison-WesleyCollege Physics: A Strategic Approach (4th Editio...PhysicsISBN:9780134609034Author:Randall D. Knight (Professor Emeritus), Brian Jones, Stuart FieldPublisher:PEARSON
![Text book image](https://www.bartleby.com/isbn_cover_images/9781305952300/9781305952300_smallCoverImage.gif)
![Text book image](https://www.bartleby.com/isbn_cover_images/9780133969290/9780133969290_smallCoverImage.gif)
![Text book image](https://www.bartleby.com/isbn_cover_images/9781107189638/9781107189638_smallCoverImage.jpg)
![Text book image](https://www.bartleby.com/isbn_cover_images/9781337553278/9781337553278_smallCoverImage.gif)
![Text book image](https://www.bartleby.com/isbn_cover_images/9780321820464/9780321820464_smallCoverImage.gif)
![Text book image](https://www.bartleby.com/isbn_cover_images/9780134609034/9780134609034_smallCoverImage.gif)