> A compact disc player rated as having speed of 8X will operate at anangular speed of about 4,000 rpm.a) What is the angular speed of the disc in the unit of radian/sec?b) By modelling the compact disc (CD) as a thin uniform disc withmass 10 g, an inner radius of 23 mm, and an outer radius of58 mm, calculate the rotational inertia of the disc.c) If the torque provided by the motor rotate this disc has the magnitude of0.1 N.m. What is the angular acceleration of the disk?d) For this angular acceleration, how many radians has the disc rotated, after2 seconds?e) How many revolutions in (d) above?

"As per the guidelines i solved the first three subpart". (a) The angular speed of the disc in the…

Answered: > A compact disc player rated as having…

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)...

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A car initially traveling at 24.2 m/s undergoes a constant negative acceleration of magnitude 1.80 m/s2 after its brakes are applied (a) How many revolutions does each tire make before the car comes to a stop, assuming the car does not skid and the tire have radii of 0.305 m? rev (b) What is the angular speed of the wheels when the car has traveled half the total distance? rad/s Need Help? Read It
0.711T TIN A disk with rotational inertia of 0.25 kg m² and radius 0.24 m rotates about a frictionless axis that passes through the disk perpendicularly through its center. A force of 50 N is applied tangentially to the edge of the disk. If the disk starts its : movement from rest, after it has rotated half a revolution, its angular velocity is: a) w = 8.6831 rad/s b) w=17.3662 rad/s c) w = 327.2396 rad/s d) w =0.0754 rad/s
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a) A diver leaps from a platform and immediately goes into a tuck position. If we assume that the diver has an initial angular velocity of 7.5 rad/sec, and has an angular acceleration of -0.22rad/sec2,how long will it take for the diver to complete 2 full revolutions?b) Assume that the diver is 6 m above the water with an initial vertical velocity of 1.74 m/s when she begins to rotate. Will she be able to complete 2 full revolutions before hitting the water? Why or why not?
For a machine with 35-cm-diameter wheels, what rotational frequency (in rpm) do the wheels need to pitch a 95 mph fastball? The answer is NOT 2020.81
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A ball with a weight of 70 N hangs from a string that is coiled around a 3 kg pulley with a radius of 0.4 m. Both the ball and the pulley are initially at rest. The rotational inertia of the pulley is 0.5mr2 and the ball is released from rest. Calculate the ball's velocity after it falls a distance of 2 meters.
Problem A) At a circus you see a man spinning plates with radii of 75 cm on top of long poles. The plates have a constant angular acceleration of 0.6 rad/s?. Assuming the plates start from rest, after a time of 8 seconds calculate a) how many revolutions they have made, b) their angular velocity, c) their tangential acceleration, d) their radial acceleration, and e) their overall acceleration, magnitude and direction with respect to the edge of the disk.
2) A bicycle has wheels with radius of r=0.25m, and the bicycle is traveling at a constant speed of vb=4.00m/s. a) What is the angular speed of the wheels? b) What is the acceleration of a point on the outside edge of the bicycle tire? Draw a pictorial representation of the acceleration and velocity vectors at that point. c) The wheel slows down. Draw a pictorial representation of where the acceleration and velocity vectors now point. (for the same point on the outside edge of the bicycle tire).
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