Physics for Scientists and Engineers, Technology Update (No access codes included)
9th Edition
ISBN: 9781305116399
Author: Raymond A. Serway, John W. Jewett
Publisher: Cengage Learning
expand_more
expand_more
format_list_bulleted
Concept explainers
Textbook Question
Chapter 6, Problem 6.3OQ
A door in a hospital has a pneumatic closer that pulls the door shut such that the doorknob moves with constant speed over most of its path. In this part of its motion, (a) does the doorknob experience a centripetal acceleration? (b) Does it experience a tangential acceleration?
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
Ajet's path is a vertical circle of radius 0.15 km. At a certain time, the jet is moving at a speed of 220 m/s and slowing down at a rate of 44 m/s?. (a) What is the magnitude of its radial acceleration? (b) What is the magnitude of its tangential acceleration? (c) What is the total acceleration of the jet?
A sprinter practicing for the 200-m dash accelerates uniformly from rest at A and reaches a top speed of 37 km/h at the 52-m mark. He
then maintains this speed for the next 97 meters before uniformly slowing to a final speed of 31 km/h at the finish line. Determine the
maximum horizontal acceleration which the sprinter experiences during the run. Where does this maximum acceleration value occur?
Part 1
Answers:
Calculate (a) the magnitude of the tangential acceleration near start of the race and (b) the magnitude of the tangential
acceleration near the end of the race.
(a) |at| =
(b) |at| =
i
Finish line
i
m/s²
39.9 m
m/s²
During liftoff, Space Shuttle astronauts typically feel ac-
celerations up to 1.4g, where g = 9.80 m/s². In their
training, astronauts ride in a device where they experi-
ence such an acceleration as a centripetal acceleration.
Chapter 6 Solutions
Physics for Scientists and Engineers, Technology Update (No access codes included)
Ch. 6 - You are riding on a Ferris wheel that is rotating...Ch. 6 - A bead slides at constant speed along a curved...Ch. 6 - Consider the passenger in the car making a left...Ch. 6 - A basketball and a 2-inch-diameter steel ball,...Ch. 6 - A child is practicing for a BMX race. His speed...Ch. 6 - Consider a skydive r who has stepped from a...Ch. 6 - A door in a hospital has a pneumatic closer that...Ch. 6 - A pendulum consists of a small object called a bob...Ch. 6 - As a raindrop falls through the atmosphere, its...Ch. 6 - An office door is given a sharp push and swings...
Ch. 6 - Before takeoff on an airplane, an inquisitive...Ch. 6 - What forces cause (a) an automobile, (b) a...Ch. 6 - A falling skydiver reaches terminal speed with her...Ch. 6 - An object executes circular motion with constant...Ch. 6 - Describe the path of a moving body in the event...Ch. 6 - The observer in the accelerating elevator of...Ch. 6 - Prob. 6.6CQCh. 6 - It has been suggested dial rotating cylinders...Ch. 6 - Consider a small raindrop and a large raindrop...Ch. 6 - Why does a pilot lend to black out when pulling...Ch. 6 - Prob. 6.10CQCh. 6 - If the current position and velocity of every...Ch. 6 - A light string can support a stationary hanging...Ch. 6 - Whenever two Apollo astronauts were on the surface...Ch. 6 - In the Bohr model of the hydrogen atom, an...Ch. 6 - A curve in a road forms part of a horizontal...Ch. 6 - In a cyclotron (one type of particle accelerator),...Ch. 6 - A car initially traveling eastward turns north by...Ch. 6 - A space station, in the form of a wheel 120 m in...Ch. 6 - Consider a conical pendulum (Fig. P6.8) with a bob...Ch. 6 - A coin placed 30.0 cm from the center of a...Ch. 6 - Why is the following situation impossible? The...Ch. 6 - A crate of eggs is located in the middle of the...Ch. 6 - A pail of water is rotated in a vertical circle of...Ch. 6 - A hawk flies in a horizontal arc of radius 12.0 m...Ch. 6 - A 40.0-kg child swings in a swing supported by two...Ch. 6 - A child of mass m swings in a swing supported by...Ch. 6 - A roller-coaster car (Fig. P6.16) has a mass of...Ch. 6 - A roller coaster at the Six Flags Great America...Ch. 6 - One end of a cord is fixed and a small 0.500-kg...Ch. 6 - Prob. 6.19PCh. 6 - An object of mass m = 5.00 kg, attached to a...Ch. 6 - All object of mass m = 500 kg is suspended from...Ch. 6 - A child lying on her back experiences 55.0 N...Ch. 6 - A person stands on a scale in an elevator. As the...Ch. 6 - Review. A student, along with her backpack on the...Ch. 6 - A small container of water is placed on a...Ch. 6 - Review. (a) Estimate the terminal speed of a...Ch. 6 - The mass of a sports car is 1 200 kg. The shape of...Ch. 6 - A skydiver of mass 80.0 kg jumps from a...Ch. 6 - Calculate the force required to pull a copper ball...Ch. 6 - A small piece of Styrofoam packing material is...Ch. 6 - Prob. 6.31PCh. 6 - Prob. 6.32PCh. 6 - Assume the resistive force acting on a speed...Ch. 6 - Review. A window washer pulls a rubber squeegee...Ch. 6 - A motorboat cuts its engine when its speed is 10.0...Ch. 6 - You can feel a force of air drag on your hand if...Ch. 6 - A car travels clockwise at constant speed around a...Ch. 6 - The mass of a roller-coaster car, including its...Ch. 6 - A string under a tension of 50.0 N is used to...Ch. 6 - Disturbed by speeding cars outside his workplace,...Ch. 6 - A car of mass m passes over a hump in a road that...Ch. 6 - A childs toy consists of a small wedge that has an...Ch. 6 - A seaplane of total mass m lands on a lake with...Ch. 6 - An object of mass m1 = 4.00 kg is tied to an...Ch. 6 - A ball of mass m = 0.275 kg swings in a vertical...Ch. 6 - Why is the following situation impossible? A...Ch. 6 - (a) A luggage carousel at an airport has the form...Ch. 6 - In a home laundry dryer, a cylindrical tub...Ch. 6 - Prob. 6.49APCh. 6 - A basin surrounding a drain has the shape of a...Ch. 6 - A truck is moving with constant acceleration a up...Ch. 6 - The pilot of an airplane executes a loop-the-loop...Ch. 6 - Review. While learning to drive, you arc in a 1...Ch. 6 - A puck of mass m1 is tied to a string and allowed...Ch. 6 - Because the Earth rotates about its axis, a point...Ch. 6 - Galileo thought about whether acceleration should...Ch. 6 - Figure P6.57 shows a photo of a swing a ride at an...Ch. 6 - Review. A piece of putty is initially located at...Ch. 6 - An amusement park ride consists of a large...Ch. 6 - Members of a skydiving club were given the...Ch. 6 - A car rounds a banked curve as discussed in...Ch. 6 - In Example 6.5, we investigated the forces a child...Ch. 6 - A model airplane of mass 0.750 kg flies with a...Ch. 6 - A student builds and calibrates an accelerometer...Ch. 6 - A 9.00-kg object starting from rest falls through...Ch. 6 - For t 0, an object of mass m experiences no force...Ch. 6 - A golfer tees off from a location precisely at i =...Ch. 6 - A single bead can slide with negligible friction...Ch. 6 - Prob. 6.69CPCh. 6 - Because of the Earths rotation, a plumb bob does...
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.Similar questions
- Which of the following is impossible for a car moving in a circular path? Assume that the car is never at rest. (a) The car has tangential acceleration but no centripetal acceleration. (b) The car has centripetal acceleration but no tangential acceleration. (c) The car has both centripetal acceleration and tangential acceleration.arrow_forwardAn office door is given a sharp push and swings open against a pneumatic device that slows the door down and then reverses its motion. At the moment the door is open the widest, (a) does the doorknob have a centripetal acceleration? (b) Does it have a tangential acceleration?arrow_forwardA point on a rotating turntable 20.0 cm from the center accelerates from rest to a final speed of 0.700 m/s in 1.75 s. At t = 1.25 s, find the magnitude and direction of (a) the radial acceleration, (b) the tangential acceleration, and (c) the total acceleration of the point.arrow_forward
- Figure P3.31 represents the total acceleration of a particle moving clockwise in a circle of radius 2.50 m at a certain instant of time. For that instant, find (a) the radial acceleration of the particle, (b) the speed of the particle, and (c) its tangential acceleration.arrow_forwardAs their booster rockets separate, Space Shuttle astronauts typically feel accelerations up to 3g, where g = 9.80 m/s2. In their training, astronauts ride in a device where they experience such an acceleration as a centripetal acceleration. Specifically, the astronaut is fastened securely at the end of a mechanical arm, which then turns at constant speed in a horizontal circle. Determine the rotation rate, in revolutions per second, required to give an astronaut a centripetal acceleration of 3.00g while in circular motion with radius 9.45 m.arrow_forwardIn Example 2.6, we considered a simple model for a rocket launched from the surface of the Earth. A better expression for the rockets position measured from the center of the Earth is given by y(t)=(R3/2+3g2Rt)2/3j where R is the radius of the Earth (6.38 106 m) and g is the constant acceleration of an object in free fall near the Earths surface (9.81 m/s2). a. Derive expressions for vy(t) and ay(t). b. Plot y(t), vy(t), and ay(t). (A spreadsheet program would be helpful.) c. When will the rocket be at y=4R? d. What are vy and ay when y=4R?arrow_forward
- An automobile whose speed is increasing at a rate of 0.400 m/s2 travels along a circular road of radius 10.0 m. (a) When the instantaneous speed of the automobile is 3.00 m/s, find the tangential acceleration component.Magnitude b) is this in the opposite or in the direction of the automobile (b) What is the centripetal acceleration component?Magnitude? and direction(toward the centre of curvature or away) (c) Determine the magnitude and direction of the total acceleration.Magnitude and direction(inward or outward from the automobiles path)arrow_forwardA father and a daughter are riding a merry-go-round, which is turning at a constant rate. The father is near the outer edge, while the daughter is closer to the center. Who has the greater tangential acceleration? Who has greater centripetal acceleration? Who has greater total acceleration?arrow_forwardYesua takes part in a 400-m dash where he must run around the end of a track that has a circular arc with a radius of curvature of 60.0 m. Yesua starts the race at a constant speed. (a) If he completes the 400-m dash in 47.3 s and maintains constant speed for the entire race, what is his centripetal acceleration as he runs the curved portion of the track? (b) If his acceleration as he runs around the circular end of the track is given by 2.18 m/s2, how long (in seconds) will it take him to complete the 400-m dash? (c) Yesua partakes in another race where the track is circular with a circumference of 250 m, find the time needed for him to make one revolution given that he accelerates at 1.89 m/s2.arrow_forward
- A golf ball is launched with the initial conditions shown in the figure. Determine the radius of curvature of the trajectory and the time rate of change of the speed of the ball (a) just after launch and (b) at apex. Neglect aerodynamic drag. 154 mi/hr 12°arrow_forwardA Ferris wheel has a radius of 5 meters and it starts at a velocity of O m/s then started to move at a velocity of 0.08 m/s for 30 seconds. (a) What is the magnitude of the radial acceleration of each passenger car? (b) What is the magnitude of the tangential acceleration of each passenger car? (c) What is the total acceleration of each passenger car?arrow_forwardWhen a large star becomes a supernova, its core may be compressed so tightly that it becomes a neutron star, with a radius of about 20 km (about the size of the San Francisco area). If a neutron star rotates once every second, (a) what is the speed of a particle on the star’s equator and (b) what is the magnitude of the particle’s centripetal acceleration? (c) If the neutron star rotates faster, do the answers to (a) and (b) increase, decrease, or remain the same?arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Principles of Physics: A Calculus-Based TextPhysicsISBN:9781133104261Author:Raymond A. Serway, John W. JewettPublisher:Cengage LearningPhysics for Scientists and Engineers: Foundations...PhysicsISBN:9781133939146Author:Katz, Debora M.Publisher:Cengage Learning
Principles of Physics: A Calculus-Based Text
Physics
ISBN:9781133104261
Author:Raymond A. Serway, John W. Jewett
Publisher:Cengage Learning
Physics for Scientists and Engineers: Foundations...
Physics
ISBN:9781133939146
Author:Katz, Debora M.
Publisher:Cengage Learning
What Is Circular Motion? | Physics in Motion; Author: GPB Education;https://www.youtube.com/watch?v=1cL6pHmbQ2c;License: Standard YouTube License, CC-BY