Essential University Physics Volume 1, Loose Leaf Edition (4th Edition)
4th Edition
ISBN: 9780135264669
Author: Richard Wolfson
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Textbook Question
Chapter 11, Problem 42P
A turntable of radius 25 cm and rotational inertia 0.0154 kg · m2 is spinning freely at 22.0 rpm about its central axis, with a 19.5-g mouse on its outer edge. The mouse walks from the edge to the center. Find (a) the new rotation speed and (b) the work done by the mouse.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
A 20.0-kg child sitting 5.80 m from the center of a merry-go-round has a constant speed of 2.00 m/s. While she remains seated in the same spot and travels in a circle, the work the seat performs on her in one complete rotation is
An electric motor is used to drive the shaft of a small water pump. During a performance test, the torque on the motor shaft is found to be 6.624 N•m when the motor is drawing 583.61 W of electrical power. What is the rotational speed of the shaft in rpm?
A ceiling fan of moment of inertia 30 kg m'
rotates about its own axis at a speed of 120
r.p.m. under the action of an electric motor of
power 62.8 watt. If electric power is cut off,
how many rotations will it complete before
coming to rest?
Chapter 11 Solutions
Essential University Physics Volume 1, Loose Leaf Edition (4th Edition)
Ch. 11.1 - Youre standing on the sidewalk watching a car go...Ch. 11.2 - The figure shows four pairs of force and radius...Ch. 11.3 - The figure shows three particles with the same...Ch. 11.4 - You step onto an initially nonrotating turntable...Ch. 11.5 - You push horizontally at right angles to the shaft...Ch. 11 - Does Earths angular velocity vector point north or...Ch. 11 - Figure 11.12 shows four forces acting on a body....Ch. 11 - You stand with your right arm extended...Ch. 11 - Although it contains no parentheses, the...Ch. 11 - Whats the angle between two vectors if their dot...
Ch. 11 - Why does a tetherball move faster as it winds up...Ch. 11 - Why do helicopters have two rotors?Ch. 11 - A group of polar bears is standing around the edge...Ch. 11 - Tornadoes in the northern hemisphere rotate...Ch. 11 - Does a particle moving at constant speed in a...Ch. 11 - When you turn on a high-speed power tool such as a...Ch. 11 - Why is it easier to balance a basketball on your...Ch. 11 - A bug, initially at rest on a stationary,...Ch. 11 - If you increase the rotation rate of a precessing...Ch. 11 - A car is headed north at 70 km/h. Give the...Ch. 11 - If the car of Exercise 15 makes a 90 left turn...Ch. 11 - A wheel is spinning at 45 rpm with its axis...Ch. 11 - A wheel is spinning about a horizontal axis with...Ch. 11 - A 12-N force is applied at the point x = 3 m, y =...Ch. 11 - A force F=1.3i+2.7jN is applied at the point x =...Ch. 11 - When you hold your arm outstretched, its supported...Ch. 11 - Express the units of angular momentum (a) using...Ch. 11 - In the Olympic hammer throw, a contestant whirls a...Ch. 11 - A gymnast of rotational inertia 62 kg m2 is...Ch. 11 - A 640-g hoop 90 cm in diameter is rotating at 170...Ch. 11 - A 7.4-cm-diameter baseball has mass 145 g and is...Ch. 11 - A potters wheel with rotational inertia 6.40 kg ...Ch. 11 - A 3.0-m-diametcr merry-go-round with rotational...Ch. 11 - A uniform, spherical cloud of interstellar gas has...Ch. 11 - A skater has rotational inertia 4.2 kg m2 with...Ch. 11 - You slip a wrench over a bolt. Taking the origin...Ch. 11 - Vector A points 30 counterclockwise from the...Ch. 11 - A baseball player extends his arm straight up to...Ch. 11 - Prob. 34PCh. 11 - A weightlifters barbell consists of two 25-kg...Ch. 11 - Prob. 36PCh. 11 - Two identical 1800-kg cars are traveling in...Ch. 11 - The dot product of two vectors is half the...Ch. 11 - Biomechanical engineers have developed...Ch. 11 - Figure 11.15 shows the dimensions of a 880-g...Ch. 11 - As an automotive engineer, youre charged with...Ch. 11 - A turntable of radius 25 cm and rotational inertia...Ch. 11 - A 17-kg dog is standing on the edge of a...Ch. 11 - A physics student is standing on an initially...Ch. 11 - Youre choreographing your schools annual ice show....Ch. 11 - Find the angle between two vectors whose dot...Ch. 11 - A circular bird feeder 19 cm in radius has...Ch. 11 - A force F applied at the point x = 2.0 m, y = 0 m...Ch. 11 - Prob. 49PCh. 11 - Prob. 50PCh. 11 - Jumbo is back! Jumbo is the 4.8-Mg elephant from...Ch. 11 - An anemometer for measuring wind speeds consists...Ch. 11 - A turntable has rotational inertia I and is...Ch. 11 - A uniform, solid, spherical asteroid with mass 1.2...Ch. 11 - About 99.9% of the solar systems total mass lies...Ch. 11 - Youre a civil engineer for an advanced...Ch. 11 - In Fig. 11.18, the lower disk, of mass 440 g and...Ch. 11 - A massless spring with constant k is mounted on a...Ch. 11 - A solid ball of mass M and radius R is spinning...Ch. 11 - A time-dependent torque given by = a + b sin ct...Ch. 11 - Consider a rapidly spinning gyroscope whose axis...Ch. 11 - When a star like our Sun exhausts its fuel,...Ch. 11 - Pulsarsthe rapidly rotating neutron stars...Ch. 11 - Prob. 64PCh. 11 - Figure 11.22 shows a demonstration gyroscope,...Ch. 11 - Figure 11.22 shows a demonstration gyroscope,...Ch. 11 - Figure 11.22 shows a demonstration gyroscope,...Ch. 11 - Figure 11.22 shows a demonstration gyroscope,...
Additional Science Textbook Solutions
Find more solutions based on key concepts
If someone at the other end of a room smokes a cigarette, you may breathe in some smoke. The movement of smoke ...
Campbell Essential Biology with Physiology (5th Edition)
What is the difference between cellular respiration and external respiration?
Human Physiology: An Integrated Approach (8th Edition)
A womans father has ornithine transcarbamylase deficiency (OTD), an X-linked recessive disorder producing menta...
Genetic Analysis: An Integrated Approach (3rd Edition)
Why are BSL-4 suits pressurized? Why not just wear tough regular suits?
Microbiology with Diseases by Body System (5th Edition)
Where is transitional epithelium found and what is its importance at those sites?
Anatomy & Physiology (6th Edition)
WHAT IF? Most prairies experience regular fires, typically every few years. If these disturbances were relativ...
Campbell Biology (11th Edition)
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
- When the electricity goes out on your campus, a backup source powers the servers that handle communications and the Internet. Rather than use batteries, many installations use a flywheel, a heavy rotating disk that spins, very rapidly, with nearly zero friction. An electric motor spins up the flywheel, which continues to spin with very little energy input. When the system needs to provide power, the flywheel’s motion is used to turn an electric generator. A typical system has a 540 kg cylinder with a radius of 0.30 m. A small electric motor provides a constant 2.8 N ⋅ m torque to spin up the cylinder. If the cylinder starts at rest, how long does it take to reach its final spin rate of 13,000 rpm?arrow_forwardTwo masses, mA = 34.0 kg and mB = 38.0 kg , are connected by a rope that hangs over a pulley (as in the figure). The pulley is a uniform cylinder of radius 0.381 m and mass 3.1 kg. Initially mA is on the ground and mB rests 2.4 m above the ground. If the system is released, use conservation of energy to determine the speed of mB just before it strikes the ground. Assume the pulley bearing is frictionless.arrow_forwardA hoop has a mass of 315g and a radius of 2cm. It rolls, without sliding, along a level ground at 9m/s with respect the ground. What is its total kinetic energy, in J, to one decimal place?arrow_forward
- A bowling ball, whose radius R is 11 cm and whose mass is 7.2 kg. rolls from rest down a plank whose length L is 2.1 m. the plank is inclined at an angle φ of 34 degrees to the horizontal. How fast is the ball moving when it reaches the bottom of the plank?arrow_forwardThe turntable in a microwave oven has a moment of inertia of 0.040 kg⋅m2 and is rotating once every 4.4 s . What is its kinetic energy?Express your answer with the appropriate units.arrow_forwardEach wheel of a 300-kg motorcycle is 61 cm in diameter and has rotational inertia 1.5 kg·m2. The cycle and its 72-kg rider are coasting at 75 km/h on flat road when they encounter a hill. if the cycle rolls up the hill with no applied power and no significant internal friction, what vertical height will it reach?arrow_forward
- A Ferris wheel has moment of inertia 2.2 x 105 kg·m2. From rest, the operator starts the wheel and it accelerates for 13.4 seconds. If the engine does a total of 5.3 x 105 joules of work, calculate the number of revolutions the wheel makes as it accelerates.arrow_forwardA rod of length L=3.00 m and negligible mass, that can pivot about one end to rotate in a vertical circle. A ball of mass m = 10.0 kg is attached to the other end. The rod is pulled aside to angle θ0 = 70° and released with initial velocity ? = 5.00 m/s. (a) What is the speed of the ball at the lowest point? (b) what is the speed of the ball when θ = 10°?arrow_forwardA point starts at a location on the x-axis and travels CCW around a circle that is centered at (0,0) at a constant angular speed. The function f(t)=24⋅sin(5t) gives the point's y-coordinate in terms of the number of seconds t since the point started moving.arrow_forward
- A propeller is modeled as five identical uniform rods extending radially from its axis. The length and mass of each rod are 0.769 m and 2.67 kg, respectively. When the propellor rotates at 521 rpm (revolutions per minute), what is its rotational kinetic energy?arrow_forwardA disc of moment of inertia 9.8/pi2 kg m2 is rotating at 600 rpm. If the frequency of rotation changes from 600 rpm to 300 rpm, then what is the work done ?arrow_forwardAn object starts from rest at the top of an inclined plane and moves down. Friction and air resistance can be ignored. Assume that the object is sliding, but not rolling, so its rotational kinetic energy is O J. The plane is inclined at an angle of 30.0 degrees from the horizontal and its length is 1.80 m. What is the object's speed when it is located at the bottom of the inclined plane? Use g = 9.80 m/s² as the magnitude of the acceleration due to gravity. Jumarrow_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
Principles of Physics: A Calculus-Based Text
Physics
ISBN:9781133104261
Author:Raymond A. Serway, John W. Jewett
Publisher:Cengage Learning
Moment of Inertia; Author: Physics with Professor Matt Anderson;https://www.youtube.com/watch?v=ZrGhUTeIlWs;License: Standard Youtube License