Physics of Everyday Phenomena
9th Edition
ISBN: 9781259894008
Author: W. Thomas Griffith, Juliet Brosing Professor
Publisher: McGraw-Hill Education
expand_more
expand_more
format_list_bulleted
Videos
Textbook Question
Chapter 2, Problem 13CQ
A ball attached to a string is whirled in a horizontal circle such that it moves with constant speed.
- a. Does the velocity of the ball change in this process? Explain.
- b. Is the acceleration of the ball equal to zero? Explain.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
On an otherwise straight stretch of road near Moffat, Colorado, the road suddenly turns. This bend in the road is a segment of a circle with radius 110 m. Drivers are cautioned to slow down to 40 mph as they navigate the curve.a. If you heed the sign and slow to 40 mph, what will be your acceleration going around the curve at this constant speed? Give your answer in m/s2 and in units of g.b. At what speed would your acceleration be double that at the recommended speed?
Elmira, New York boasts of having the fastest carousel ride in the world. The merry-go-round at Eldridge Park takes riders on a spin at 18 mi/hr (8.0 m/s). The radius of the circle about which the outside riders move is approximately 7.4 m.
a. Determine the time for outside riders to make one complete circle.b. Determine the acceleration of the riders.
An object moves in a horizontal circle at constant speed v (in units of m/s). It takes the object T seconds to complete one revolution.
a. Derive an expression that gives the radial acceleration of the ball in terms of v and T, but not r.
b. If the speed doubles, by what factor must the period T change if arad is to remain unchanged?
Chapter 2 Solutions
Physics of Everyday Phenomena
Ch. 2 - Prob. 1CQCh. 2 - Suppose we choose inches as our basic unit of...Ch. 2 - What units would have an appropriate size for...Ch. 2 - A tortoise and a hare cover the same distance in a...Ch. 2 - A driver states that she was doing 80 when stopped...Ch. 2 - Does the speedometer on a car measure average...Ch. 2 - Is the average speed over several minutes more...Ch. 2 - The highway patrol sometimes uses radar guns to...Ch. 2 - Is the term vehicle density (as used in everyday...Ch. 2 - Prob. 10CQ
Ch. 2 - At the front end of a traffic jam, is the vehicle...Ch. 2 - A hockey puck is sliding on frictionless ice. It...Ch. 2 - A ball attached to a string is whirled in a...Ch. 2 - Prob. 14CQCh. 2 - A dropped ball gains speed as it falls. Can the...Ch. 2 - A driver of a car steps on the brakes, causing the...Ch. 2 - At a given instant in time, two cars are traveling...Ch. 2 - A car just starting up from a stop sign has zero...Ch. 2 - A car traveling with constant speed rounds a curve...Ch. 2 - A racing sports car traveling with a constant...Ch. 2 - In the graph shown here, velocity is plotted as a...Ch. 2 - A car moves along a straight line so that its...Ch. 2 - For the car whose distance is plotted against time...Ch. 2 - A car moves along a straight section of road so...Ch. 2 - For the car whose velocity is plotted in question...Ch. 2 - Look again at the velocity-versus-time graph for...Ch. 2 - Suppose the acceleration of a car increases with...Ch. 2 - When a car accelerates uniformly from rest, which...Ch. 2 - The velocity-versus-time graph of an object curves...Ch. 2 - For a uniformly accelerated car, is the average...Ch. 2 - A car traveling in the forward direction...Ch. 2 - A car starts from rest, accelerates uniformly for...Ch. 2 - Suppose that two runners run a 100-meter dash, but...Ch. 2 - Sketch a graph showing velocity-versus-time curves...Ch. 2 - A physics instructor walks with increasing speed...Ch. 2 - Prob. 36CQCh. 2 - Return to example box 2.4, but this time assume...Ch. 2 - A traveler covers a distance of 413 miles in a...Ch. 2 - A walker covers a distance of 2.4 km in a time of...Ch. 2 - Grass clippings are found to have an average...Ch. 2 - A driver drives for 2.5 hours at an average speed...Ch. 2 - A woman walks a distance of 504 m, with an average...Ch. 2 - A person in a hurry averages 70 MPH on a trip...Ch. 2 - A hiker walks with an average speed of 1.3 m/s....Ch. 2 - Prob. 8ECh. 2 - A car travels with an average speed of 65 MPH....Ch. 2 - Starting from rest and moving in a straight line,...Ch. 2 - Starting from rest, a car accelerates at a rate of...Ch. 2 - The velocity of a car decreases from 28 m/s to 20...Ch. 2 - A car traveling with an initial velocity of 16 m/s...Ch. 2 - A runner traveling with an initial velocity of 1.1...Ch. 2 - A car moving with an initial velocity of 32 m/s...Ch. 2 - A runner moving with an initial velocity of 4.0...Ch. 2 - If a world-class sprinter ran a distance of 100...Ch. 2 - Starting from rest, a car accelerates at a...Ch. 2 - A railroad engine moves forward along a straight...Ch. 2 - The velocity of a car increases with time, as...Ch. 2 - A car traveling due west on a straight road...Ch. 2 - A car traveling in a straight line with an initial...Ch. 2 - Just as car A is starting up, it is passed by car...
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
- A fastball pitcher can throw a baseball at a speed of 40 m/s (90 mi/b). (a) Assuming the pitcher can release the ball 16.7 m from home plate so the ball is moving horizontally, how long does it take the ball to reach bone plate? (b) How far does the ball drop between the pitcher’s hand and home plate?arrow_forwardOn an otherwise straight stretch of road near Netherland, Colorado, the suddenly turns. This bend in the road is a segment of a circle of radius 110m. Drivers are cautioned to slow down to 75km/h as they navigate the curve. A. Draw a useful picture for this situation, indicating directions of the acceleration and velocity as the car goes around the curve. B. If you heed the sign and slow to this speed as you go around the curve, what will be your acceleration? C. At what speed will your acceleration be double that of part B?arrow_forwardDuring the spin cycle of a washing machine, the clothes stick to the outer wall of the barrel as it spins at a rate as high as 1800 revolutions per minute. The radius of the barrel is 2.6m Determine the speed of the clothes (in m/s) which are located on the wall of the spin barrel. b. Determine the acceleration of the clothes.arrow_forward
- An object moves in a horizontal circle at constant speed v (in units of m/s). It takes the object T seconds to complete one revolution. a. Derive an expression that gives the radial acceleration of the ball in terms of v and T, but not r. b. If the speed doubles, by what factor must the period T change if arad is to remain unchanged? c. If the radius doubles, by what factor must the period change to keep arad the same?arrow_forwarda. A car travels around a circular path. Does the car travel with constant speed or constant velocity?arrow_forwardShown is a graph of the motion of the blades of a blender that is starts empty and is initially turned off. Then the power is turned on at thehighest speed setting, some ice cubes are added, and the blades slow down. The blades are 3.0 cm long.a. When the blender is empty and running at high speed, how much time is required for a blade to turn by 90°?b. How many revolutions does a blade complete between 15 and 20 seconds?c. How fast is the tip of a blade moving when the blender is running empty?arrow_forward
- A person is standing on top of a building. While standing at the edge of the building the person throws a water balloon downward with a speed of 22 m/s and at an angle of 36 degrees below the horizontal. It takes 2.6 s for the water balloon to hit the other persons friend. a. How high is the building? b. How fast is the water balloon moving when it hits the friend in the ground? Give answer in m/s. c. What was the horizontal distance between the friend on the ground and the building in meters?arrow_forwardA car travels around a circle at a constant speed of 20.0 m/s. A magnetic compass in the car indicates that it's direction of travel changes from North to northeast in 4.00 seconds. A. Find the change in the cars velocity during this interval. B. Determine the average acceleration.arrow_forwardA cart that is rolling at a constant velocity on a level table fires a ball straight up out of a vertical tube. a. When the ball comes back down, will it land in front of the launching tube, behind the launching tube, or directly into the tube? Explain. b. Does your answer change if the cart is accelerating in the forward direction? If so, how?arrow_forward
- An object is thrown off the top of a building with velocity 32 m/s at an angle 34 degrees with respect to the horizontal. It takes 6.2 s for the object to land. a. How high is the building in meters? b. What is the horizontal distance that the object travels in meters?arrow_forwardMr. Udadi takes his three children to the park for some summertime recreation. Olive Udadi is enjoying swinging and jumping. On one jump, Olive leaves the swing at a 30° angle to the horizontal with a speed of 2.2 m/s. She lands on the ground a horizontal distance of 1.09 m from the launch location. a. Determine the horizontal and the vertical components of the initial velocity.b. Determine the time which Olive is in the air.c. Determine the vertical height (relative to the landing location) from which Olive jumps from the swing.arrow_forwardSuperman stands on top of a very tall mountain and throws a baseball horizontally with a speed such that the baseball goes into a circular orbit around the earth. While the baseball is in orbit, what is the magnitude of the acceleration of the ball? a. It depends on how fast the baseball is thrown b. It is zero because the ball does not fall to the ground c. It is slightly less than 9.80m/s^2 d. It is equal to 9.80m/s^2arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
University Physics Volume 1PhysicsISBN:9781938168277Author:William Moebs, Samuel J. Ling, Jeff SannyPublisher:OpenStax - Rice University
Classical Dynamics of Particles and SystemsPhysicsISBN:9780534408961Author:Stephen T. Thornton, Jerry B. MarionPublisher:Cengage Learning
University Physics Volume 1
Physics
ISBN:9781938168277
Author:William Moebs, Samuel J. Ling, Jeff Sanny
Publisher:OpenStax - Rice University
Classical Dynamics of Particles and Systems
Physics
ISBN:9780534408961
Author:Stephen T. Thornton, Jerry B. Marion
Publisher:Cengage Learning
Vectors and 2D Motion: Crash Course Physics #4; Author: CrashCourse;https://www.youtube.com/watch?v=w3BhzYI6zXU;License: Standard YouTube License, CC-BY