Essential University Physics (3rd Edition)
3rd Edition
ISBN: 9780134202709
Author: Richard Wolfson
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Textbook Question
Chapter 5, Problem 26E
A 940-g rock is whirled in a horizontal circle at the end of a 1.30-m-long string, (a) If the breaking strength of the string is 120 N, what’s the minimum angle the string can make with the horizontal? (b) At this minimum angle, what’s the rock’s speed?
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
A kid whirls a rock of mass 0.5 kg in a vertical circle of radius 0.80 m. (a) What is the minimum speed of the rock at the top of the circle such that the rope does not go slack? (b) What is the speed of the rock at the bottom of the circle if the tension in the rope is 17.0 N?
A roller-coaster car has a mass of 1220 kg when fully loaded with passengers. As the car passes over the top of a circular hill of radius
18.1 m, its speed is not changing. (a) At the top of the hill, what is the normal force (using the negative sign for the downward direction)
FN on the car from the track if the car's speed is v- 9.49 m/s? (b) What is F if v- 16.7 m/s?
(a) Number i
(b) Number i
Units
Units
A 980-gg rock is whirled in a horizontal circle at the end of a 1.7-mm-long string.
If the breaking strength of the string is 110 NN , what’s the minimum angle the string can make with the horizontal?
At this minimum angle, what’s the rock’s speed?
Chapter 5 Solutions
Essential University Physics (3rd Edition)
Ch. 5.1 - A roofers toolbox rests on an essentially How does...Ch. 5.2 - In the figure below weve replaced one of the hands...Ch. 5.3 - You whirl a bucket of water around in a vertical...Ch. 5.4 - The figure shows a logging vehicle pulling a...Ch. 5 - Compare the net force on a heavy trunk when its...Ch. 5 - The force of static friction acts only between...Ch. 5 - A jet plane flies at constant speed in a vertical...Ch. 5 - In cross-country skiing, skis should easily glide...Ch. 5 - Why do airplanes bank when turning?Ch. 5 - Why is it easier for a child to stand nearer the...
Ch. 5 - Gravity pulls a satellite toward Earths center. So...Ch. 5 - Explain why a car with ABS brakes can have a...Ch. 5 - A fishing line has a 20-lb breaking strength. Is...Ch. 5 - Two blocks rest on slopes of unequal angles,...Ch. 5 - Youre on a plane undergoing a banked turn, so...Ch. 5 - A backcountry skier weighing 700 N skis down a...Ch. 5 - Two forces, both in the x-y plane, act on a...Ch. 5 - Two forces act on a 3.1-kg mass that undergoes...Ch. 5 - At what angle should you tilt an air table to...Ch. 5 - A skier starts from rest at the top of a 24 slope...Ch. 5 - A tow truck is connected to a 1400-kg car by a...Ch. 5 - Studies of gymnasts show that their high rate of...Ch. 5 - Find the minimum slope angle for which the skier...Ch. 5 - Section 5.2 Multiple Objects Your 12-kg baby...Ch. 5 - If the left-hand slope in Fig. 5.30 makes a 60...Ch. 5 - Suppose the angles shown in Fig. 5.30 are 60 and...Ch. 5 - Two unfortunate climbers, roped together, are...Ch. 5 - Suppose the Moon were held in its orbit not by...Ch. 5 - Show that the force needed to keep a mass m in a...Ch. 5 - A 940-g rock is whirled in a horizontal circle at...Ch. 5 - Youre investigating a subway accident in which a...Ch. 5 - A tetherball on a 1.55-m rope is struck so that it...Ch. 5 - An airplane goes into a turn 3.6 km in radius. If...Ch. 5 - Movers slide a 73-kg file cabinet along a floor...Ch. 5 - A hockey puck is given an initial speed of 14 m/s....Ch. 5 - Starting from rest, a skier slides 100 m down a 28...Ch. 5 - A car moving at 40 km/h negotiates a 130-m-radius...Ch. 5 - Prob. 34PCh. 5 - A block is launched with initial speed 2.2 m/s up...Ch. 5 - In the process of mitosis (cell division), two...Ch. 5 - A 14.6-kg monkey hangs from the middle of a...Ch. 5 - A camper hangs a 26-kg pack between two trees...Ch. 5 - A mass m, undergoes circular motion of radius R on...Ch. 5 - Patients with severe leg breaks arc often placed...Ch. 5 - Riders on the Great American Revolution...Ch. 5 - A 45-kg skater rounds a 5.0-m-radius turn at 6.3...Ch. 5 - When a piano turns, it banks as shown in Fig. 5.35...Ch. 5 - You whirl a bucket of water in a vertical circle...Ch. 5 - A child sleds down an 8.5 slope at constant speed....Ch. 5 - The handle of a 22-kg lawnmower makes a 35 angle...Ch. 5 - Repeal Example 5.4, now assuming that the...Ch. 5 - A bat crashes into the vertical front of an...Ch. 5 - The coefficient of static friction between steel...Ch. 5 - A bug crawls outward from the center of a CD...Ch. 5 - A 310-g paperback book rests on a 1.2-kg textbook....Ch. 5 - Children sled down a41-m-long hill inclined at 25....Ch. 5 - In a typical front-wheel-drive car, 70% of the...Ch. 5 - A police officer investigating an accident...Ch. 5 - A slide inclined at 35 takes bathers into a...Ch. 5 - You try to move a heavy trunk, pushing down and...Ch. 5 - A block is shoved up a 22 slope with an initial...Ch. 5 - At the end of a factory production line, boxes...Ch. 5 - Youre in traffic court, arguing against a speeding...Ch. 5 - A space station is in the shape of a hollow ring,...Ch. 5 - In a loop-the-loop roller coaster, show that a car...Ch. 5 - Find an expression for the minimum frictional...Ch. 5 - An astronaut is training in an earthbound...Ch. 5 - You stand on a spring scale at the north pole and...Ch. 5 - Driving in thick fog on a horizontal road, you...Ch. 5 - A block is projected up an incline at angle . It...Ch. 5 - A 2.1-kg mass is connected to a spring with spring...Ch. 5 - Take k = 0.75 in Example 5.11, and plot the...Ch. 5 - Repeat the preceding problem for an arbitrary...Ch. 5 - Moving through a liquid, an object of mass m...Ch. 5 - Suppose the object in Problem 70 had an initial...Ch. 5 - A block is launched with speed v0 up a slope...Ch. 5 - A florist asks you to make a window display with...Ch. 5 - Youre al the state fair. A sideshow barker claims...Ch. 5 - One of the limiting factors in high-performance...Ch. 5 - Figure 5.39 shows an apparatus used to verify...Ch. 5 - A spiral is an ice-skating position in which the...Ch. 5 - A spiral is an ice-skating position in which the...Ch. 5 - A spiral is an ice-skating position in which the...Ch. 5 - A spiral is an ice-skating position in which the...
Additional Science Textbook Solutions
Find more solutions based on key concepts
27. An old-fashioned single-play vinyl record rotates on a turntable at 45 rpm. What are (a) the angular veloci...
Physics for Scientists and Engineers: A Strategic Approach with Modern Physics (4th Edition)
At the instant shown in Figure 1, which direction is the star moving (circle one)?
Lecture- Tutorials for Introductory Astronomy
The pV-diagram of the Carnot cycle.
Sears And Zemansky's University Physics With Modern Physics
Compare and contrast astronomy and astrology.
Conceptual Integrated Science
Discuss how the energy stored in an empty but charged capacitor changes when a dielectric is inserted if (a) th...
University Physics Volume 2
Using the definitions in Eqs. 1.1 and 1.4, and appropriate diagrams, show that the dot product and cross produc...
Introduction to Electrodynamics
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 0.50-kg ball that is tied to the end of a 2.0-m light cord is revolved in a horizontal plane, with the cord making a e = 30° angle with the vertical. (a) Determine the ball's speed. m/s (b) If, instead, the ball is revolved so that its speed is 3.8 m/s, what angle does the cord make with the vertical? (c) If the cord can withstand a maximum tension of 9.3 N, what is the highest speed at which the ball can move? m/sarrow_forwardA 940 g rock is whirled in a horizontal circle at the end of a 1.5 m-long string. If the breaking strength of the string is 120 N , what is the maximum allowable speed of the rock? At this maximum speed, what angle does the string make with the horizontal?arrow_forwardA 0.80 kg ball , attached to the end of a horizontal cord , is rotated in a acircle of radius 2.0m on a frictionless horizontal surface , if the cord will break when the tension in it exceeds 80 N , what is the maximum speed the ball can have ?arrow_forward
- Humpback whales sometimes catch fishby swimming rapidly in a circle, blowing a curtain of bubbles thatconfuses a school of fish and traps it in a small area, where thewhales can easily catch and eat them. Suppose a 28,000-kg humpback whale swims at 2.2 m>s in a circle of radius 8.5 m. What centripetal force must the whale generate?arrow_forwardWhile driving along a country lane with a constant speed of 17 m/s, you encounter a dip in the road. The dip can be approximated as a circular arc with a radius of 65m. What is the normal force exerted by the car seat on an 80kg passenger when the car is at the bottom of the dip?arrow_forwardAnd don't worry about whether the passengers would actually survive the trip. They are lightweight crash test dummies. NTC A cart of mass m= 347 kg is going around a circular loop-the-loop. There is no motor. The cart moves only under the influence of gravity. Ignore friction and let g = 9.81 meters per second squared. The loop has a radius of r meters. When the cart is at the top of the loop, the normal force on the cart (exerted by the track) pushes down on the cart with a force of N = 1,330 newtons. When it is at the bottom of the loop, the cart has a speed of 30.7 meters per second. What is the radius of the loop (in units of meters)?arrow_forward
- One end of a string of length 0.64 m is attached to a bucket containing water and the bucket is rotated about the other end in a vertical circle. Find the minimum speed with which it can be rotated without spilling the water at the highest point. How many revolutions per minute it is making?arrow_forwardA rope of length 1m can withstand a maximum weight of 10 kg. Now a stone of mass 200 g is tied to it and is whirled round in a horizontal circle. Calculate the maximum permissible speed of the stone.arrow_forwardA 0.50-kg ball that is tied to the end of a 1.1-m light cord is revolved in a horizontal plane, with the cord making a 0 = 30° angle with the vertical. (a) Determine the ball's speed. m/s (b) If, instead, the ball is revolved so that its speed is 3.6 m/s, what angle does the cord make with the vertical? (c) If the cord can withstand a maximum tension of 9.9 N, what is the highest speed at which the ball can move? m/sarrow_forward
- A string under tension of 50.0 N is used to whirl a rock in a horizontal circle of radius 2.5 m at a speed of 20.4 m/s on a frictionless table. The string passes through a small hole in the table at the center of this circle. As the string is pulled in, the speed of the rock increases. When the string is 1.00 m long and the speed is 51.0 m/s, the string breaks. What is the breaking strength, in Newtons, of the string?arrow_forwardA jet dives vertically at a speed v = 174 m/s, before pulling out of the dive along a circular arc. The pilot can survive an acceleration of a = 8.6 g. His mass is m = 91 kg. What is the minimum radius of the circular arc, in meters, that the pilot can make without injury? (Watch you sigfigs) I understand how to calculate this answer, but I need help determining the correct number of sig figs for the answer.arrow_forwardA small object of mass 0.20 kg is whirled in a horizontal circle at the end of the 1 m long cord. What is the highest speed that the object can have if the cord can sustain a maximum force of 4 newtons without breaking?arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- 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
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
Mechanical work done (GCSE Physics); Author: Dr de Bruin's Classroom;https://www.youtube.com/watch?v=OapgRhYDMvw;License: Standard YouTube License, CC-BY