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10.1 Exercise 13

Avg difficulty 2.5

On takeoff, the propellers on a UAV (unmanned aerial vehicle) increase their angular velocity for 3.0 s from rest at a rate of ω=(25.0t)rad/s\omega = \left(25.0 t\right) \text{rad} / \text{s} where t is measured in seconds. (a) What is the instantaneous angular velocity of the propellers at t=2.0st = 2.0 \text{s}? (b) What is the angular acceleration?

OpenStax University Physics Volume 1, 10.1 Rotational Variables, exercise 13

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Adapted from University Physics Volume 1 © 2016 Rice University. Licensed under CC BY 4.0. Source: University Physics Volume 1. Imported at revision db44eb9.