Question 8 The angular velocity of a spinning disk obeys the equation w = 1.4 t+ 47 . What is the angular acceleration of the disk at t = 18 sec? (PUHQ842) a) 847.40 rad/sec2 b) O1693.00 rad/sec2 c) O1692.00 rad/sec2 d) O846.00 rad/sec?

Question 8 The angular velocity of a spinning disk obeys the equation w = 1.4 t+ 47 . What is the angular acceleration of the disk at t = 18 sec? (PUHQ842) a) 847.40 rad/sec2 b) O1693.00 rad/sec2 c) O1692.00 rad/sec2 d) O846.00 rad/sec?

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

ΔΔΔΔΔΔΔΔΔΔΔΔΔΔ ΔΔΔΔΔΔΔΔ 2. When Josh begins his discus throwing motion, he spins with an angular velocity of 5 rad/s. Just before he releases the discus, Josh's angular velocity is 25 rad/s. If the time from the beginning of the throw to just before release is 1 s, what is Josh's average angular acceleration? 650103 ομ alapits sont besogne
A figure skater performs a twisting jump. She rotates around her longitudinal axis 2 times in 0.65 s. What was her average angular velocity in radians/second? A 720rad/s B 19.3rad/s C 4? rad/s D 9.67 rad/s E 1107 rad/s
A ball of radius R is rolling across a rough surface without slipping. What is the relationship between the angular speed w and the translational speed v? Select the correct answer Ov=w/R Ov=Rw O v = 1/w Ov=w Ov=R/w Image size: S M L Max +
A ball is attached to a 0.5 m string and makes four rotations in 1 second. Determine the angular velocity of the ball. O 12.57 rad/s O 25.13 rad/s O 23.15 rad/s 15.35 rad/sec
The rotating blade of a blender turns with a constant angular acceleration 1.50(rad/s²]. A. How much time does it take to reach an angular velocity of 36. 0 [rad/s] starting from rest? Through how manry revolutions does the blade turn in this time interval? C. What are the tangertial acceleration and tangential speed of an ant sitting on the blade 10.0 [cm) from the axis of rotation during the end of this irterval? D. What is the moment of inertia ofthe ant if its mass is 10.0 (g? E. What is the rotational kinetic energy of the ant? B.
4
The uniform 22-kg plate is released from rest at the position shown. (Figure 1) Figure A x 0.5 m- 1 of 1 0.5 m > Part A Determine its initial angular acceleration. Express your answer in radians per second squared to three significant figures. Enter positive value if the angular acceleration is clockwise and negative value if the angular acceleration is counterclockwise. a = Submit Part B 195| ΑΣΦ. 41 Request Answer vec ? rad/s² Review Determine the x and y components of reaction at the pin A using scalar notation. Express your answers in newtons to three significant figures separated by a comma.
Assume a clock mounted on the wall, what is the value of angular acceleration of the second hand of the clock on the wall ? 11 12 10 3. 765 2nrad / sec? 60 rad / sec? O rad/sec2 n rad/ sec? 4.
A star with a mass of 3.41 x 1030 kilograms and a radius of 8.20 x 108 meters rotates on its axis once every 33 days. a. What is the angular momentum of the star? Include units in your answer. b. After running out of fusible matter, the star collapses under its own gravity to form a pulsar with a radius of 24.1 kilometers. What is the period of rotation of the pulsar? Include units in your answer.
The angular speed of a rotating platform changes from W equals 2.8 rads/S to W equals 6.8 rad/S at a constant rate as a platform moves through an angle 5.5 rad. The platform has a radius of R equals 28 cm w0=2.8rad/s w=6.8rad/s 0=5.5 radians r=28cm calculate the angular acceleration of the platform a in rad per second squared calculate the tangential acceleration, aT in meters per second squared of a point on the surface of the platform at the outer edge
3) Throwing: A hammer thrower spins 4 times in 1.6 s before releasing the hammer. The radius between the hammer centre of mass and the axis of rotation is 1.80 m. a. What is the average angular velocity of rotation in rad/s? b. What is the tangential linear velocity of the hammer at release? Please report your answers to 2 decimal places and in SI units. a. Answer: Unit: b. Answer: Unit:
Need help on these two questions