College Physics
11th Edition
ISBN: 9781305952300
Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
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A bar on a hinge starts from rest and rotates with an
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- A dentist's drill starts from rest. After 4.30 s of constant angular acceleration it turns at a rate of 2.05 ✕ 104 rev/min. (a) Find the drill's angular acceleration. rad/s2(b) Determine the angle (in radians) through which the drill rotates during this period.arrow_forwardAn amusement park ride rotates around a fixed axis such that the angular position of a point on the ride follows the equation: θ(t) = a + bt2 – ct3 where a = 2.1 rad, b = 0.75 rad/s2 and c = 0.035 rad/s3. a. Determine an equation for the angular speed of the ride as a function of time, omega(t). Write your answet using the symbols a, b, and c, instead of their numerical values. b. Besides at t = 0, at what time t1 is the ride stopped? Give your answer in seconds. c. What is the magnitude of the angular displacement of the ride in radians between times t = 0 and t = t1? d. Determine an equation for the angular acceleration of the ride as a function of time, alpha(t). Write your answer using the symbols a, b, and c, instead of their numerical values. e. What is the angular acceleration in rad/s^2 when the ride is at rest t = t1?arrow_forwardA boy rides his bicycle 1.68 km. The wheels have a radius 32.5 cm. What is the total angle (in rad) the tires rotate through during his trip?arrow_forward
- An electric motor rotating a workshop grinding wheel at a rate of 151rev/min is switched off. Assume constant angular deceleration of magnitude 2.93 rad/s2. Through how many revolutions does the wheel turn before it finally comes to rest?arrow_forwardConvert 51.0° to radians. rad (b) Convert 17.0 rad to revolutions. rev (c) Convert 79.0 rpm to rad/s. rad/sarrow_forwardA dentist's drill starts from rest. After 3.30 s of constant angular acceleration it turns at a rate of 2.10 x 10° rev/min. (a) Find the drill's angular acceleration. | rad/s² (b) Determine the angle (in radians) through which the drill rotates during this period. radarrow_forward
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