PHY F/SCIENTIST MOD MASTERING 24 MO
17th Edition
ISBN: 9780137319497
Author: Knight
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Textbook Question
Chapter 8, Problem 25EAP
A 500 g ball moves in a vertical circle on a 102-cm-long string. If the speed at the top is 4.0 m/s, then the speed at the bottom will be 7.5 m/s. (You'll learn how to show this in Chapter 10.)
a. What is the gravitational force acting on the ball?
b. What is the tension in the string when the ball is at the top?
c. What is the tension in the string when the ball is at the bottom?
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
1.
An object of mass m is connected to a string of length
1, and set into motion around a vertical circle as shown
in the figure. When it is at the top, tension in the string
is 5mg.
a. Find the speed of the object at the top i
b. Find the speed of the object at the bottom
c. Find the tension in the string when it is at the
bottom
d. If the string is cut when the object is at the bottom,
find the range of the object
H6.
A skier/snowboarder starts at rest at the top of a snowy (friction-free) hill with height h1. After the bottom of this hill there is a small “jump” hill. The top of the jump has height h2 and a curvature of radius R. What is the minimum height of the starting hill, h1min, so that the skier/snowboarder jumps or “catches air” at the top of hill 2? Solve for h1min in terms of h2, R, and g. Hint: if the skier/snowboarder jumps, he/she/they loose contact with the snowy ground.
An 800kg roller coaster traveling at 10m/s is 80m above the bottom of the track. a. How fast is the roller coaster car traveling at the bottom of the hill? b. How fast is the roller coaster car traveling at the top of the loop?
Chapter 8 Solutions
PHY F/SCIENTIST MOD MASTERING 24 MO
Ch. 8 - In uniform circular motion, which of the following...Ch. 8 - A car runs out of gas while driving down a hill....Ch. 8 - FIGURE Q8.3 is a bird's-eye view of particles on...Ch. 8 - Tarzan swings through the jungle on a massless...Ch. 8 - FIGURE Q8.5 shows two balls of equal mass moving...Ch. 8 - Ramon and Sally are observing a toy car speed up...Ch. 8 - A jet plane is flying on a level course at...Ch. 8 - A small projectile is launched parallel to the...Ch. 8 - 9. You can swing a ball on a string in a vertical...Ch. 8 - A golfer starts with the club over her head and...
Ch. 8 - As a science fair project, you want to launch an...Ch. 8 - A 500 g model rocket is on a cart that is rolling...Ch. 8 - A 4.0 × 1010 kg asteroid is heading directly...Ch. 8 - A 55 kg astronaut who weighs 180 N on a distant...Ch. 8 - A 1500 kg car drives around a flat 200-m-diameter...Ch. 8 - A 1500 kg car takes a 50-m-radius unbanked curve...Ch. 8 - A 200 g block on a 50-cm-long string swings in a...Ch. 8 - In the Bohr model of the hydrogen atom, an...Ch. 8 - Suppose the moon were held in its orbit not by...Ch. 8 - 10. A highway curve of radius 500 m is designed...Ch. 8 - It is proposed that future space stations create...Ch. 8 - A 5.0 g coin is placed 15 cm from the center of a...Ch. 8 - Mass m1on the frictionless table of FIGURE EX8.13...Ch. 8 - A satellite orbiting the moon very near the...Ch. 8 - What is free-fall acceleration toward the sun at...Ch. 8 - 16. A 9.4 × 1021 kg moon orbits a distant planet...Ch. 8 - Communications satellites are placed in circular...Ch. 8 - A car drives over the top of a hill that has a...Ch. 8 - The weight of passengers on a roller coaster...Ch. 8 - A roller coaster car crosses the top of a circular...Ch. 8 - The normal force equals the magnitude of the...Ch. 8 - A student has 65-cm-long arms. What is the minimum...Ch. 8 - While at the county fair, you decide to ride the...Ch. 8 - A 500 g ball swings in a vertical circle at the...Ch. 8 - A 500 g ball moves in a vertical circle on a...Ch. 8 - A heavy ball with a weight of 100 N (m = 10.2 kg)...Ch. 8 - A toy train rolls around a horizontal...Ch. 8 - 28. A new car is tested on a 200-m-diameter track....Ch. 8 - An 85,000 kg stunt plane performs a loop-the-loop,...Ch. 8 - Three cars are driving at 25 m/s along the road...Ch. 8 - Derive Equations 8.3 for the acceleration of a...Ch. 8 - 32. A 100 g bead slides along a frictionless wire...Ch. 8 - 33. Space scientists have a large test chamber...Ch. 8 - 34. A 5000 kg interceptor rocket is launched at an...Ch. 8 - Prob. 35EAPCh. 8 - 36. A rocket- powered hockey puck has a thrust of...Ch. 8 - Prob. 37EAPCh. 8 - A 2.0 kg projectile with initial velocity m/s...Ch. 8 - A 75 kg man weighs himself at the north pole and...Ch. 8 - A concrete highway curve of radius 70 m banked at...Ch. 8 - a. an object of mass m swings in horizontal circle...Ch. 8 -
42. You’ve taken your neighbor’s young child to...Ch. 8 - A 4.4-cm-diameter, 24 g plastic ball is attached...Ch. 8 - A charged particle of mass m moving with speed v...Ch. 8 - Two wires are tied to the 2.0 kg sphere shown in...Ch. 8 - Two wires are tied to the 300 g sphere shown in...Ch. 8 - A conical pendulum is formed by attaching a ball...Ch. 8 - The 10 mg bead in FIGURE P8.48 is free to slide on...Ch. 8 - In an old-fashioned amusement park ride,...Ch. 8 - The ultracentrifuge is an important tool for...Ch. 8 - In an amusement park ride called The Roundup,...Ch. 8 - 52. Suppose you swing a ball of mass m in a...Ch. 8 - A 30 g ball rolls around a 40-cm-diameter L-shaped...Ch. 8 - FIGURE P8.54 shows a small block of mass m sliding...Ch. 8 - The physics of circular motion sets an upper limit...Ch. 8 - A 100 g ball on a 60-cm-long string is swung in a...Ch. 8 - A 60 g ball is tied to the end of a 50-cm-long...Ch. 8 - Elm Street has a pronounced dip at the bottom of a...Ch. 8 - 59. A 100 g ball on a 60-cm-long string is swung...Ch. 8 - Scientists design a new particle accelerator in...Ch. 8 - 61. A 1500 kg car starts from rest and drives...Ch. 8 - Prob. 62EAPCh. 8 - 63. A 2.0 kg ball swings in a vertical circle on...Ch. 8 - In Problems 64 and 65 you are given the equation...Ch. 8 - In Problems 64 and 65 you are given the equation...Ch. 8 - Sam (75 kg) takes off up a 50-m-high, 10°...Ch. 8 - In the absence of air resistance, a projectile...Ch. 8 - The father of Example 8.2 stands at the summit of...Ch. 8 - A small bead slides around a horizontal circle at...Ch. 8 - A 500 g steel block rotates on a steel table while...Ch. 8 - If a vertical cylinder of water (or any other...
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
- 1. An object of mass, m, is dropped from a height, h, on the surface of the earth.... A. What time, t, will it take to land? B. How fast will it be traveling when it impacts the ground?I know, I know we’ve done this before using the equations of constant linear acceleration... but this time I want you to use the concept of conservation of energy to find the answer. c. Now compare and contrast 2 ways to arrive at the same conclusion. (Yeah, don’t you think the 2 methods may be different but they should come to the same conclusion??!!)arrow_forwardE6. A car with a mass of 1300 kg is moving around a curve with a radius of 35 m at a constant speed of 15 m/s (about 35 MPH). a. What is the centripetal acceleration of the car? b. What is the magnitude of the force required to produce this centripetal acceleration?arrow_forwardP5 The gravitational attraction on Moon 1 of Jupiter is 10/sec². An object is launched 45 ft above the surface of Moon 1 with a velocity of 40%/sec upward. a. Find the equation of motion of this object. b. Find the maximum height above the surface of Moon 1 reached by this object. c. Find the time for this object to reach the surface of Moon 1.arrow_forward
- A 200 g block on a 52.0 cm -long string swings in a circle on a horizontal, frictionless table at 95.0 rpm a.)What is the speed of the block? b.What is the tension in the string?arrow_forwardE10. Suppose that the gravitational acceleration on a certain planet is only 3.0 m/s^2. A space explorer standing on this planet throws a ball straight upward with an initial velocity of 18 m/s. a. What is the velocity of the ball 4 seconds after it is thrown? b. How much time elapses before the ball reaches the high point in its flight?arrow_forwardThe planet in the orbit shown in the drawing obeys Kepler s 2nd Law. B During which part of the planet's orbit (A, B, C, or D) would the planet move with the greatest speed? Answer E if you think the planet travels with the same speed during ALL of the portions of the motion (A, B, C, and D). O A. A В. В O C. C D.D O E. Earrow_forward
- on a highway curve with radius 42 m, the maximum force of static friction (centripetal force) that can act on a 1,123 kg car going around the curve is 8,127 N. A. what is the magnitude and direction of child's acceleration? B. what is the acceleration in g's C. what speed limit should be posted for the curve so that cars can negotiate it safelyarrow_forwardE8. A Ferris wheel at a carnival has a radius of 10 m and turns so that the speed of the riders is 8 m/s. a. What is the magnitude of the centripetal acceleration of the riders?b. What is the magnitude of the net force required to produce this centripetal acceleration for a rider with a mass of 60 kg?arrow_forwardMissy’s favorite ride at the Topsfield Fair is the rotor. This is a circular ride (with a radius of 4.0m) where people stand up against the wall and it spins around and the floor drops out. The ride takes 2.0s to make one full revolution a. What is providing the centripetal force on Missy? b. What is Missy’s linear velocity? c. What is Missy’s centripetal acceleration on the ride? Show Your Workarrow_forward
- A 0.25 kg ball is swung in a vertical direction on the end of s 1.5 m long cord of negligible mass. a. what is the minimum speed at the top of the circle so that the ball continues to move in a circle, and b. what is the tension in the string if the speed at the bottom is double the speed at the top. c. Compare the ratio of the tension in the vertical motion in ii. with the tension in the string if the 0.25 kg object is swung in a horizontal direction on the end of the 2.0 m cord and the string revolves at 240 rpm.arrow_forwardTwo Jupiter-size planets are released from rest 1.20x10¹1 m apart. Part A What are their speeds as they crash together? Express your answer with the appropriate units. μA Value Units ?arrow_forward1. A probe of mass m is in a circular orbit of radius r around a planet (mass M). a. Draw the free body diagram showing the forces on the probe. b. Use what you know about circular motion dynamics to determine the orbital speed of the probe in terms of G, M, m and/or r as needed. Assume M » m and use Newton's Second Law. Also recall the centripetal acceleration. m C. What is the kinetic energy of the probe in this orbit in terms of G, M, m, and r? Please simplify your answer. d. What is the total energy of the probe when it is in this orbit? Please simplify your answer. e. The probe is initially at rest on the surface of the planet of radius Rp. How much work must the rockets do on the probe to lift it into the orbit of radius 3R? Answers in terms of G, Rp, M and/or m as needed.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 Learning
Physics for Scientists and EngineersPhysicsISBN:9781337553278Author:Raymond A. Serway, John W. JewettPublisher:Cengage Learning
Physics for Scientists and Engineers with Modern ...PhysicsISBN:9781337553292Author:Raymond A. Serway, John W. JewettPublisher: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
Physics
ISBN:9781337553278
Author:Raymond A. Serway, John W. Jewett
Publisher:Cengage Learning
Physics for Scientists and Engineers with Modern ...
Physics
ISBN:9781337553292
Author:Raymond A. Serway, John W. Jewett
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