11. A spinning disc starts from rest and reaches an angular velocity of wf = 620 rad/s in 20 seconds. What is the angular acceleration of the disc? At t = 20 s, for a point 0.05 m away from the center, what is the corresponding tangential velocity? c) Sketch a graph of a vs t from t=0 s to t = 20 s. a) b)

11. A spinning disc starts from rest and reaches an angular velocity of wf = 620 rad/s in 20 seconds. What is the angular acceleration of the disc? At t = 20 s, for a point 0.05 m away from the center, what is the corresponding tangential velocity? c) Sketch a graph of a vs t from t=0 s to t = 20 s. a) b)

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 golfer is hitting a shot, the angular velocity of her club is zero at the top of the backswing and 30 rad/s at the bottom of the downswing just before impact with the ball. If the downswing lasts 0.30 s, what is the average angular acceleration of the club during the downswing? A. 100 rad/s^2 B. 10 rad/s^2 C. 100 deg/s^2 D. 30 rad/s^2 pick one answer only this is for biomechanics
pls help
1. The blades of a fan running at low speed turn at 300 rpm. When the fan is switched to high speed, the rotation rate increases uniformly to 430 rpm in 5.30 s. What is the magnitude of the angular acceleration of the blades? rad/s2 f60 ssi f60 0 ssro0
A ball of radius Ris rolling across a rough surface without slipping. What is the relationship between the angular speed w and the translational speed v? Image size: Select the correct answer Ου-R/ω Ου- 1/ω O v= w Ου-ω/R O V = Rw
Jimmothy has a flywheel. It rotates about its central axis. It starts from rest and accelerates uniformly. After completing 100 revolutions, the flywheel reaches an angular speed of 70.9 rad/s. It's your job to calculate the following: 1. What is The angular acceleration of the flywheel 2. What is The time required to complete the first 50 revolutions. 3. What is The time required to complete the second 50 revolutions.
2. A wheel of radius 20 cm is initially rotating at 12 rpm. It then speeds up at a constant rate, reaching a speed of 35 rpm after 3.1 seconds. a) What is the angular acceleration of the disk? b) How much does it rotate (in radians) while it is accelerating from 12 to 35 rpm?" c) What is total acceleration (in m/s?) of a point on the edge of the disk at the moment it has just started accelerating?|
A wheel is rotating counter clockwise initially at an angular speed of 2.50 rad/s. Itdeceleratesover a 4.0-s interval at a rate of 0.140 rad/s2. a)What is its angular speed after this 7.0-s interval? b)What is the angular displacement? c) How long would it take for it to stop?
A flywheel (I 49 kg m' 21 starting from rest acquires an angular velocity of 233 rad/s while subject to a constant torque from a motor for 5 s. a. What is the angular acceleration of the flywheel? rad/s? b. What is the magnitude of the torque? N m Question Help: Message instructor Submit Question
A skater spins about a fixed point on the ice. She begins with her arms extended and an initial angular velocity wo. She then pulls her arms in to her body. After her arms are pulled to her body, she spins with an angular velocity final ,wf . Throughout the time she is spinning, no external forces are acting in the horizontal plane. How do the magnitudes of the initial and final angular velocities compare? OA. Wo > Wf OB. WO = wf w0 < wf OE. ооо оо