18th Edition

ISBN: 9781938168277

Author: William Moebs, Samuel J. Ling, Jeff Sanny

Publisher: OpenStax - Rice University

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Textbook Question

Chapter 11, Problem 87AP

A potter’s disk spins from rest up to 10 rev/s in 15 s. The disk has a mass 3.0 kg and radius 30.0 cm. What is the angular momentum of the disk at t = 5 s , t = 10 s ?

Definition Definition Rate of change of angular velocity. Angular acceleration indicates how fast the angular velocity changes over time. It is a vector quantity and has both magnitude and direction. Magnitude is represented by the length of the vector and direction is represented by the right-hand thumb rule. An angular acceleration vector will be always perpendicular to the plane of rotation. Angular acceleration is generally denoted by the Greek letter α and its SI unit is rad/s 2 .

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Chapter 11, Problem 86AP

Chapter 11, Problem 88AP

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Chapter 11 Solutions

University Physics Volume 1

Ch. 11 - Check Your Understanding A hollow cylinder is on...Ch. 11 - Check Your Understanding A proton spiraling around...Ch. 11 - Check Your Understanding Which has greater angular...Ch. 11 - Check Your Understanding A merry-go-round at a...Ch. 11 - Check Your Understanding A top has a precession...Ch. 11 - Can a round object released from rest at the top...Ch. 11 - A cylindrical can of radius R is rolling across a...Ch. 11 - A wheel is released from the top on an incline. Is...Ch. 11 - Which rolls down an inclined plane faster, a...Ch. 11 - A hollow sphere and a hollow cylinder of the same...

Ch. 11 - Can you assign an angular momentum to a particle...Ch. 11 - For a particle traveling in a straight line, are...Ch. 11 - Under what conditions does a rigid body have...Ch. 11 - If a particle is moving with respect to a chosen...Ch. 11 - If you know the velocity of a particle, can you...Ch. 11 - What is the purpose of the small propeller at the...Ch. 11 - Suppose a child walks from the outer edge of a...Ch. 11 - As the rope of a tethered ball winds around a...Ch. 11 - Suppose the polar ice sheets broke free and...Ch. 11 - Explain why stars spin faster when they collapse.Ch. 11 - Competitive divers pull their limbs in and curl up...Ch. 11 - Gyroscopes used in guidance systems to indicate...Ch. 11 - Earth precesses about its vertical axis with a...Ch. 11 - What is the angular velocity of a 75.0-cm-diameter...Ch. 11 - A boy rides his bicycle 2.00 km. 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The...Ch. 11 - A propeller consists of two blades each 3.0 m in...Ch. 11 - A pulsar is a rapidly rotating neutron star. The...Ch. 11 - The blades of a wind turbine are 30 m in length...Ch. 11 - A roller coaster has mass 3000.0 kg and needs to...Ch. 11 - A mountain biker takes a jump in a race and goes...Ch. 11 - Conservation of Angular Momentum 52.A disk of mass...Ch. 11 - The Sun’s mass is 2.01030kg , its radius is...Ch. 11 - A cylinder with rotational inertia I1=2.0kgm2...Ch. 11 - A diver off the high board imparts an initial...Ch. 11 - An Earth satellite has its apogee at 2500 km above...Ch. 11 - A Molniya orbit is a highly eccentric orbit of a...Ch. 11 - Shown below is a small particle of mass 20 g that...Ch. 11 - A bug of mass 0.020 kg is at rest on the edge of a...Ch. 11 - A uniform rod of mass 200 g and length 100 cm is...Ch. 11 - A merry-go-round has a radius of 2.0 m and a...Ch. 11 - A playground merry-go-round has a mass of 120 kg...Ch. 11 - Three children are riding on the edge of a...Ch. 11 - (a) Calculate the angular momentum of an ice...Ch. 11 - Twin skaters approach one another as shown below...Ch. 11 - A baseball catcher extends his arm straight up to...Ch. 11 - In 2015, in Warsaw, Poland, Olivia Oliver of Nova...Ch. 11 - A satellite in a geosynchronous circular orbit is...Ch. 11 - A gymnast does cartwheels along the floor and then...Ch. 11 - The centrifuge at NASA Ames Research Center has a...Ch. 11 - A ride at a carnival has four spokes to which pods...Ch. 11 - An ice skater is preparing for a jump with turns...Ch. 11 - A space station consists of a giant rotating...Ch. 11 - Neptune has a mass of 1.01026kg and is 4.5109km...Ch. 11 - A gyroscope has a 0.5-kg disk that spins at 40...Ch. 11 - The precession angular velocity of a gyroscope is...Ch. 11 - The axis of Earth makes a 23.5 angle with a...Ch. 11 - A marble is rolling across the floor at a speed of...Ch. 11 - Repeat the preceding problem replacing the marble...Ch. 11 - The mass of a hoop of radius 1.0 m is 6.0 kg. It...Ch. 11 - Repeat the preceding problem for a hollow sphere...Ch. 11 - A particle has mass 0.5 kg and is traveling along...Ch. 11 - A 4.0-kg particle moves in a circle of radius 2.0...Ch. 11 - A proton is accelerated in a cyclotron to...Ch. 11 - (a) What is the angular momentum of the Moon in...Ch. 11 - A DVD is rotating at 500 rpm. 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