A disk rotates about its central axis starting from rest and accelerates with constant angular acceleration. At
Question:
A disk rotates about its central axis starting from rest and accelerates with constant angular acceleration. At one time it is rotating at 10 rev/s; 60 revolutions later, its angular speed is 15 rev/s. Calculate
(a) The angular acceleration,
(b) The time required to complete the 60 revolutions,
(c) The time required to reach the 10 rev/s angular speed, and
(d) The number of revolutions from rest until the time the disk reaches the 10 rev/s angular speed.
Step by Step Answer:
The wheel starts turning from rest a 0 at t 0 and accelerates uni...View the full answer
Fundamentals of Physics
ISBN: 978-0471758013
8th Extended edition
Authors: Jearl Walker, Halliday Resnick
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Angular movements are produced when the angle between the bones of joint changes. There are several different types of angular movements, including flexion, extension, hyperextension, abduction, adduction, and circumduction. Flexion, or bending, occurs when the angle between the bones decreases. Moving the forearm upward at the elbow or moving the wrist to move the hand toward the forearm are examples of flexion. The extension is the opposite of flexion in that the angle between the bones of a joint increase.
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