A mass of 2.0 kg, which may be considered to be a point mass, is attached to a string of length 0.3 m and is rotated at 8.0 rad/s. Calculate the moment of inertia of the mass about the axis. A. 0.18 kg m B. 0.09 kg m C. 0.3 kg m² D. 0.15 kg m?

A mass of 2.0 kg, which may be considered to be a point mass, is attached to a string of length 0.3 m and is rotated at 8.0 rad/s. Calculate the moment of inertia of the mass about the axis. A. 0.18 kg m B. 0.09 kg m C. 0.3 kg m² D. 0.15 kg m?

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

See similar textbooks

Similar questions

A bicycle wheel has a diameter of 700mm and a mass of 3.0 kg. Most of the mass of the wheel is in the tire so you can treat it as a hoop. a. Suppose the wheel is attached to a bicycle that is moving at 7.0 m/s. What is the angular velocity of the wheel in rad/sec? b. If the bicycle slows down to 4.0 m/s over a period of 10.0 sec, what is the angular acceleration of the wheel in rad/sec 2?
A 1kg round object (radius 0.2 m), initially at rest, rolls down a ramp without slipping. The object fell through 1m-drop and has a final speed of 1 m/s. What is the moment of inertia of the object? a) 1.00 kg m² b) 1.77 kg m² c) 0.744 kg m² d) 4.90 kg m² e) 12.5 kg m² h=1m
help
A skater starts the jump moving forward as shown, leaps into the air, and turns one-and-a-half revolutions before landing. The typical skater is in the air for about 0.5 s, and the skater’s hands are located about 0.8 m from the rotation axis. What is the approximate angular speed of the skater during the leap?A. 2 rad/s B. 6 rad/s C. 9 rad/s D. 20 rad/s
If a wheel is turning with a constant angular speed of 3.0 rad/s, then the time it takes to complete one revolution is about: O a. 1.20 s b. 0.67 s O C. 2.09 s d. 0.33 s
The moment of inertia for a 2200 kg solid disc is 11800 kg-m². Find the radius of the disc. А. 3.275 m D. 3.893 m В. 3.932 m E. 2.687 m С. 2.951 m F. 3.810 m
1. 0 10 20 ESSE 30 x(cm) Four masses are arranged as shown. M₁-3 kg at (0,0)cm. M3-3 kg at (20,0)cm. M₂=5 kg at (10,0)cm. M4-5 kg at (30,0)cm. The masses are connected by a light rod of negligible mass. a.) Calculate the moment of inertia if the masses rotate around the y-axis (M₁ is the center of rotation). b.) The object is rotating about the y-axis with w = 6 rad/s. Find the tangential velocities of each separate mass. Show that the sum of the kinetic energies of the individual masses equals the rotational energy of the entire system:Σ-1m₁ v² = 1/1/1w². c.) If 0.5 J of work is done to this system, what is the new angular velocity, w? d.) Calculate the moment of inertia of the system if it now rotates about an axis that passes through mass #3, parallel to the y-axis. e.) What is the rotational kinetic energy of the system if it rotates about M3 with w = 6 rad/s?
The figure shows a book and three axes on which the book can rotate. On which axis is the moment of inertia the smallest? A. On axis a. B. The moment of inertia is the same for all three axes. C. On axis b. D. On axis c.
A 1300 kg disc with radius 2.4 m is rotating at 1500 rev/min when an 850 m-N braking torque is applied to the wheel. How long does it take for the disk to come to rest? A. 10.54 min D. 13.28 min В. 11.53 min E. 9.181 min С. 9.469 min F. 8.992 min
A 1000 kg car with a speed of 50 miles per hour on the curve of 50 in diamenter. What is the angular of the car? a. 22.2 rad/s b. 0.889 rad/s c. 22.2 m/s d. 45 rad/s e. 0.45 rad/s
Suppose the rotational kinetic energy of a solid disk is 1000 J when the disk has an angular velocity of 3 rad/s. What is the disk's moment of inertia? If the mass of the disk is 50 kg, what must be its radius? moment of inertia: A. 276.5 kg-m? B. 222.2 kg-m? D. 238.5 kg-m? E. 239.2 kg-m? С. 175.9 kg-m? F. 170.3 kg-m? /--/ radius: А. 2.490 m D. 2.536 m В. 2.981 m Е. 3.341 m С. 3.212 m F. 3.195 m
An ice skater is spinning on the ice with her arms fully extended. When she pulls in her arms, she spins at a faster rate because a. Her moment of inertia decreases. b. Her moment of inertia increases. c. Her moment of inertia stays the same. d. Her mass stays the same. e. Her weight stays the same.