EBK ESSENTIAL UNIVERSITY PHYSICS, VOLUM
4th Edition
ISBN: 9780135272992
Author: Wolfson
Publisher: VST
expand_more
expand_more
format_list_bulleted
Textbook Question
Chapter 10, Problem 26E
A wheel’s diameter is 92 cm, and its rotational inertia is 7.8 kg · m2. (a) What’s the minimum mass it could have? (b) How could it have more mass?
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
(a) Calculate the angular momentum (in kg • m?/s) of Mars in its orbit around the Sun. (The mass of Mars is 6.420 x 1023 kg, the orbital radius is 2.279 x 108 km
and the orbital period is 1.88 y.)
3.53e39
V kg • m2/s
(b) Compare this angular momentum with the angular momentum of Mars on its axis. (The radius of Mars is 3.396 x 103 km and the rotation period is 24.62 h.)
Lorbital
Lrotation
= 2.10e26
Additional Materials
M Reading
e Show My Work (Optional) ?
Three disks A, B and C with same radius 5.0 cm are placed at coordinate (0,50 cm), (-15 cm,
0), and (15 cm, 0), respectively as shown as Figure 1. The masses of the three disks are mA =
0.2 kg, mв — тс —
0.4 kg. They are connected by thin rods which has negligible masses.
Find
A(0, 50)
MA = 0.2
B(-15,0)
C(15, 0)
тв 3 0,4
MC = 0.4
Figure 1
(a) the coordinate of the centre of mass of the system.
(b) the rotational inertia about the axis perpendicular to the plane and passing
through the centre of disk A.
Find the angular momentum (in kg · m2/s) of Saturn in its orbit around the Sun.
- The mass of Saturn is 5.680 ✕ 1026 kg, the orbital radius is 1.427 ✕ 109 km and the orbital period is 29.5 y.
Compare this angular momentum with the angular momentum of Saturn on its axis.
- The radius of Saturn is 6.027 ✕ 104 km and the rotation period is 10.66 h.
Chapter 10 Solutions
EBK ESSENTIAL UNIVERSITY PHYSICS, VOLUM
Ch. 10.1 - A wheel undergoes constant angular acceleration,...Ch. 10.2 - The forces in Figs. 10.5 and 10.6 all have the...Ch. 10.3 - Would the rotational inertia of the two-mass...Ch. 10.3 - Explain why the rotational inertia of the solid...Ch. 10.3 - The figure shows two identical masses m connected...Ch. 10.4 - A wheel is rotating at 100 rpm. To spin it up to...Ch. 10.5 - The wheels of trains, subway cars, and other rail...Ch. 10 - Do all points on a rigid, rotating object have the...Ch. 10 - A point on the rim of a rotating wheel has nonzero...Ch. 10 - Two forces act on an object, but the net force is...
Ch. 10 - Is it possible to apply a counterclockwise torque...Ch. 10 - A solid sphere and a hollow sphere of the same...Ch. 10 - A solid cylinder and a hollow cylinder of the same...Ch. 10 - A circular saw lakes a long time to stop rotating...Ch. 10 - The lower part of a horses leg contains...Ch. 10 - Given a fixed amount of a material, what shape...Ch. 10 - A ball starts from rest and rolls without slipping...Ch. 10 - Exercises and Problems Exercises Section 10.1...Ch. 10 - Whats the linear speed of a point (a) on Earths...Ch. 10 -
Express each of the following in radium per...Ch. 10 - A 25-cm-diameter circular saw blade spins at 3500...Ch. 10 - A compact discs rotation varies from about 200 rpm...Ch. 10 - During startup, a power plants turbine accelerates...Ch. 10 - A merry-go-round starts front rest and accelerates...Ch. 10 - Section 10.2 Torque A 320-N frictional force acts...Ch. 10 - Prob. 19ECh. 10 - A car tune-up manual calls for tightening the...Ch. 10 - A 55-g mouse runs out to the end of the 17-cm-long...Ch. 10 - You have your bicycle upside down for repairs. The...Ch. 10 - Section 10.3 Rotational Inertia and the Analog of...Ch. 10 - The shaft connecting a power plants turbine and...Ch. 10 - The chamber of a rock-tumbling machine is a hollow...Ch. 10 - A wheels diameter is 92 cm, and its rotational...Ch. 10 - (a) Estimate Earths rotational inertia, assuming...Ch. 10 - A 108-g Frisbee is 24 cm in diameter and has half...Ch. 10 - At the MIT Magnet Laboratory, energy is stored in...Ch. 10 - Section 10.4 Rotational Energy A 25-cm-diameter...Ch. 10 - Humankind uses energy at the rate of about 16 TW....Ch. 10 - A 150-g baseball is pitched at 33 m/s spinning at...Ch. 10 - (a) Find the energy stored in the flywheel of...Ch. 10 - A solid 2.4-kg sphere is rolling at 5.0 m/s. Find...Ch. 10 - What fraction of a solid disks kinetic energy is...Ch. 10 - A rolling ball has total kinetic energy 100 J, 40...Ch. 10 - Prob. 37ECh. 10 - Example 10.5: The rotational inertia of a thin rod...Ch. 10 - Prob. 39ECh. 10 - Prob. 40ECh. 10 - Prob. 41ECh. 10 - Prob. 42ECh. 10 - Example 10.12: A 29.5-kg wheel with radius 40.6 cm...Ch. 10 - Prob. 44ECh. 10 - A wheel turns through 2.0 revolutions while...Ch. 10 - Youre an engineer designing kitchen appliances,...Ch. 10 - You rev your cars engine and watch the tachometer...Ch. 10 - A circular saw spins at 5800 rpm, and its...Ch. 10 - Full-circle rotation is common in mechanical...Ch. 10 - A square frame is made from four thin rods, each...Ch. 10 - A thick ring has inner radius 12R, outer radius R,...Ch. 10 - A uniform rectangular flat plate has mass M and...Ch. 10 - The cellular motor driving the flagellum in E....Ch. 10 - Verify by direct integration Table 10.2s entry for...Ch. 10 - Prob. 55PCh. 10 - Prob. 56PCh. 10 - A 2.4-kg block rests on a slope and is attached by...Ch. 10 - Youve got your bicycle upside down for repairs,...Ch. 10 - A potters wheel is a stone disk 90 cm in diameter...Ch. 10 - A ships anchor weighs 5.0kN. Its cable passes over...Ch. 10 - Starting from rest, a hollow ball rolls down a...Ch. 10 - A hollow ball rolls along a horizontal surface at...Ch. 10 - As an automotive engineer, youre charged with...Ch. 10 - A solid ball of mass M and radius R starts at rest...Ch. 10 - A disk of radius R has an initial mass M. Then a...Ch. 10 - A 50-kg mass is tied to a massless rope wrapped...Ch. 10 - Each wheel of a 320-kg motorcycle is 52 cm in...Ch. 10 - A solid marble starts from rest and rolls without...Ch. 10 - A disk of radius R and thickness w has a mass...Ch. 10 - The disk in Fig. 10.29 is rotating freely about a...Ch. 10 - Prob. 71PCh. 10 - A lighter car requires less power for a given...Ch. 10 - Calculate the rotational inertia of a solid,...Ch. 10 - A thick ring of mass M has inner radius R1 and...Ch. 10 - Prob. 75PCh. 10 - The local historical society has asked your...Ch. 10 - Youre skeptical about a new hybrid car that stores...Ch. 10 - Figure 10.31 shows an object of mass M with one...Ch. 10 - Figure 10.32 shows an apparatus used to measure...Ch. 10 - Centrifuges are widely used in biology and...Ch. 10 - Centrifuges are widely used in biology and...Ch. 10 - Centrifuges are widely used in biology and...Ch. 10 - Centrifuges are widely used in biology and...Ch. 10 - Centrifuges are widely used in biology and...
Additional Science Textbook Solutions
Find more solutions based on key concepts
(a) The density of water at 0C is very nearly 1000kg/m3 (it is actually 999.84kg/m3 ), whereas the density of i...
College Physics
19. A car starts from rest at a stop sign. It accelerates at 4.0 m/s2 for 6.0 s, coasts for 2.0s, and then slow...
Physics for Scientists and Engineers: A Strategic Approach with Modern Physics (4th Edition)
23. An electron moves with a speed of 1.0 × 107 m/s in the directions shown in Figure P24.23. A0.50 T magnetic ...
College Physics: A Strategic Approach (3rd Edition)
Which of the two planets (Esus or Sulis) do you think will move around the central star in the least amount of ...
Lecture- Tutorials for Introductory Astronomy
18. In one form of cataract surgery the person's natural lens, which has become cloudy, is replaced by an artif...
College Physics (10th Edition)
Explain all answers clearly, with complete sentences and proper essay structure if needed. An asterisk (*) desi...
Cosmic Perspective Fundamentals
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 satellite is spinning at 6.0 rev/s. The satellite consists of a main body in the shape of a sphere of radius 2.0 m and mass 10,000 kg, and two antennas projecting out from the center of mass of the main body that can be approximated with rods of length 3.0 m each and mass 10 kg. The antenna’s lie in the plane of rotation. What is the angular momentum of the satellite?arrow_forwardThe velocity of a particle of mass m = 2.00 kg is given by v= 5.10 + 2.40 m /s. What is the angular momentumof the particle around the origin when it is located atr= 8.60 3.70 m?arrow_forward(a) Calculate the angular momentum (in kg · m2/s) of Jupiter in its orbit around the Sun. (The mass of Jupiter is 1.898 ✕ 1027 kg, the orbital radius is 7.783 ✕ 108 km and the orbital period is 11.9 y.) kg · m2/s (b) Compare this angular momentum with the angular momentum of Jupiter on its axis. (The radius of Jupiter is 7.149 ✕ 104 km and the rotation period is 9.925 h.) Lorbital Lrotation =arrow_forward
- A disk with velocity v= 10m/s, mass m=4 kg, and radius r=.3 m. Find the total kinetic energy.arrow_forwardAt what rate, in watts, is the Earth losing rotational kinetic energy due to tidal braking? [Hint:The rotational kinetic energy of the earth,Erot=0.5I⊕ω2, where ω= 2π/P is the rotational angular speed,Pbeing the Earth’s rotationalperiod. The moment of inertia of the Earth, I⊕=(2/5)M⊕R⊕2.]arrow_forwardA rotating star collapses under the influence of gravitational forces to form a pulsar. The radius of the pulsar is 5.00 × 10−4 times the radius of the star before collapse. There is no change in mass. In both cases, the mass of the star is uniformly distributed in a spherical shape. If the period of the star’s rotation before collapse is 4.00 × 104 s, what is its period after collapse?arrow_forward
- HE Problem 9: Consider the sign shown in the figure, which has a mass of m= 8.2 kg. sin() cos() cotan() asin() atan() acotan() cosh() tan() IT ( acos( E sinh( tanh() cotanh() Degrees O Radians Submit Hint 7 8 9t 45 6 123 0 * - VONOMICE Part (b) What force, in newtons, is exerted by each side on the hinge? rt (a) What minimum coefficient of friction is needed between the legs and the ground to keep the sign in the position shown if the chain breaks? F Hinge TENI CHAN Chain- co ca 0.50m Uniform board (co at center) 1.10 m 1.30marrow_forward(a) Calculate the angular momentum (in kg · m2/s) of Neptune in its orbit around the Sun. (The mass of Neptune is 1.020 x 1026 kg, the orbital radius is 4.497 x 10° km and the orbital period is 165 y.) ] kg · m²/s (b) Compare this angular momentum with the angular momentum of Neptune on its axis. (The radius of Neptune is 2.476 x 104 km and the rotation period is 16.11 h.) Lorbital Frotationarrow_forwardAn exotic planet Vogsphere is known to have a mass that is 1/81 that of the Earth and a radius 0.25 that of the Earth. Astrophysicist Trillian built a rocket and decided to leave the planet and never to return. Given that the escape speed from the Earth is 11.2 km/s, with what speed must Trillian achieve his goal?arrow_forward
- A 1500-kg satellite orbits a planet in a circular orbit of radius 6.2 × 106 m from the center of the planet. What is the angular momentum, in kg m2/s, of the satellite, with respect from an axis from the center of the planet, if it completes one orbit every 1.5 × 104 s?arrow_forwardThe earth moves about the sun in an elliptical orbit where angular momentum about the sun is conserved. Earth's distance from the sun ranges from 0.983 AU (at perihelion, the closest point) to 1.017 AU (at aphelion, the farthest point). The AU is a unit of distance. If the orbital speed of Earth at aphelion is v, what is the orbital speed of Earth at perihelion?arrow_forwardA neutron star is the remnant of a large star that exploded in a supernovaat the end of its life. Suppose the star’s radius decreases by a factor of6 × 10−5 during this process, and its mass decreases by a factor of eight.If the star rotates once per 20 days during its life, how fast would itsremnant neutron star rotate? Assume the star is always a solid, uniformsphere. (It is not, but this exercise still gives a reasonable answer).arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Physics for Scientists and Engineers: Foundations...PhysicsISBN:9781133939146Author:Katz, Debora M.Publisher:Cengage LearningClassical Dynamics of Particles and SystemsPhysicsISBN:9780534408961Author:Stephen T. Thornton, Jerry B. MarionPublisher:Cengage LearningUniversity Physics Volume 1PhysicsISBN:9781938168277Author:William Moebs, Samuel J. Ling, Jeff SannyPublisher:OpenStax - Rice University
- Glencoe Physics: Principles and Problems, Student...PhysicsISBN:9780078807213Author:Paul W. ZitzewitzPublisher:Glencoe/McGraw-Hill
Physics for Scientists and Engineers: Foundations...
Physics
ISBN:9781133939146
Author:Katz, Debora M.
Publisher:Cengage Learning
Classical Dynamics of Particles and Systems
Physics
ISBN:9780534408961
Author:Stephen T. Thornton, Jerry B. Marion
Publisher:Cengage Learning
University Physics Volume 1
Physics
ISBN:9781938168277
Author:William Moebs, Samuel J. Ling, Jeff Sanny
Publisher:OpenStax - Rice University
Glencoe Physics: Principles and Problems, Student...
Physics
ISBN:9780078807213
Author:Paul W. Zitzewitz
Publisher:Glencoe/McGraw-Hill
Rotational Kinetic Energy; Author: AK LECTURES;https://www.youtube.com/watch?v=s5P3DGdyimI;License: Standard YouTube License, CC-BY