Answered: ircular disc with radius r = 0.967 m…

ircular disc with radius r = 0.967 m rotates around its own axis. What is the angular acceleration after the time 8.4 s if θ (t) = k · t^n rad, where k = 3.41 and the exponent n = 1.94?

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter12: Rotation I: Kinematics And Dynamics

Section: Chapter Questions

Problem 69PQ: The propeller of an aircraft accelerates from rest with an angular acceleration = 4t + 6, where is...

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Concept explainers

Centripetal Force

A particle, body, object or certain mass while travelling in a rotational path or semicircular path, experiences an inertia force. If that inertia force pulls the towards the inward of the imaginary circle in the rotation, it is termed as centripetal force.

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A circular disc with radius r = 0.967 m rotates around its own axis. What is the angular acceleration after the time 8.4 s if θ (t) = k · t^n rad, where k = 3.41 and the exponent n = 1.94?

Definition Definition Rate of change of angular velocity. Angular acceleration indicates how fast the angular velocity changes over time. It is a vector quantity and has both magnitude and direction. Magnitude is represented by the length of the vector and direction is represented by the right-hand thumb rule. An angular acceleration vector will be always perpendicular to the plane of rotation. Angular acceleration is generally denoted by the Greek letter α and its SI unit is rad/s 2 .

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