Current Attempt in Progress A cockroach of mass m lies on the rim of a uniform disk of mass 5.00 m that can rotate freely about its center like a merry-go-round Initially the cockroach and disk rotate together with an angular velocity of 0.322 rad/s. Then the cockroach walks halfway to the center of the disk. (a) What then is the angular velocity of the cockroach-disk system? (b) What is the ratio K/Ko of the new kinetic energy of the system to its initial kinetic energy? (a) w = i (b) K/K i

Current Attempt in Progress A cockroach of mass m lies on the rim of a uniform disk of mass 5.00 m that can rotate freely about its center like a merry-go-round Initially the cockroach and disk rotate together with an angular velocity of 0.322 rad/s. Then the cockroach walks halfway to the center of the disk. (a) What then is the angular velocity of the cockroach-disk system? (b) What is the ratio K/Ko of the new kinetic energy of the system to its initial kinetic energy? (a) w = i (b) K/K i

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

Need by 1 hour
Please help solve for the angular velocity. The hint is: The torques that accelerate the bananas and the monkey when they land on the platform are internal to the system.
Two circular objects with the same radii and mass but different moments of inertia rol down a ramp. At the bottom of the ramp, the translational speed (a) of both disks will be the same (b) of the disk with the greater moment of inertia will be greater (c) of the disk with the greater moment of inertia will be smaller (d) not enough information to draw a conclusion
A dentist using a dental drill brings it from rest to maximum operating speed of 360,000 rpm in 4.0 s. Assume that the drill accelerates at a constant rate during this time. (a) What is the angular acceleration of the drill in rev/s2? rev/s2 (b) Find the number of revolutions the drill bit makes during the 4.0 s time interval. rev
How do I solve this question?
A particle of mass 0.300 kg is attached to the 100-cm mark of a meterstick of mass 0.150 kg. The meterstick rotates on the surface of a frictionless, horizontal table with an angular speed of 6.00 rad/s. a) Calculate the angular momentum of the system when the stick is pivoted about an axis perpendicular to the table through the 50.0-cm mark. b) Calculate the angular momentum of the system when the stick is pivoted about an axis perpendicular to the table through the 0-cm mark.
A disk initially at rest is fixed to a vertical axis of rotation and a 40 kg child is standing on the disk initially at rest 0.5 meters away from the axis of rotation. The rotational inertia of the disk is 50 kgm2. The boy pushes and jumps off the disk and the disk begins to rotate at 0.5 rad/s. Calculate the linear velocity of the child as they push off the disk. (The rotational inertia of the boy is mr2)
Flying Circus of Physics A yo-yo has a rotational inertia of 1110 g.cm² and a mass of 94.4 g. Its axle radius is 2.47 mm, and its string is 133 cm long. The yo-yo rolls from rest down to the end of the string. (a) What is the magnitude of its linear acceleration? (b) How long does it take to reach the end of the string? As it reaches the end of the string, what are its (c) linear speed, (d) translational kinetic energy, (e) rotational kinetic energy, and (f) angular speed? (a) Number i 5.1 (b) Number i 7.2 (c) Number i (d) Number i (e) Number i (f) Number i 000 Units Units Units Units Units Units m/s^2 PHON
A pitcher throws a curveball that reaches the catcher in 0.64 s. The ball curves because it is spinning at an average angular velocity of 260 rev/min (assumed constant) on its way to the catcher's mitt. What is the angular displacement of the baseball (in radians) as it travels from the pitcher to the catcher? Number Units
A playground merry-go-round has a mass of 120 kg and a radius of 1.80 m and it is rotating with an angular velocity of 0.450 rev/s. What is its angular velocity (in rev/s) after a 28.0 kg child gets onto it by grabbing its outer edge? The child is initially at rest. Ex rev/s S Stanned with CamScanner er a unber Additional Materials O Reading
A 20 kg pulley with a 0.5 m radius is initially at rest. The rotational inertia of the pulley is 0.47 mr2. A 10 kg box hangs from a rope that is wrapped around the pulley that is also initially at rest. The box falls a set distance and gains a velocity of 8 m/s. Calculate the distance that the box fell to reach that velocity.
The tires of a car make 85 revolutions as the car reduces its speed uniformly from 87.0 km/hkm/h to 58.0 km/hkm/h. The tires have a diameter of 0.82 mm. What was the angular acceleration of the tires? If the car continues to decelerate at this rate, how much more time is required for it to stop? If the car continues to decelerate at this rate, how far does it go? Find the total distance.