Question

(8%) Problem 3: A disk at rest experiences a constant angular acceleration for t55 s, at the end of which it is spinning with a 45 rpm. Please answer the following questions. frequency of f 17% Part ( a) Write an expressicn for the magnitude of the angular velocity of the disk after the acceleration in terms of the frequency. Correct! o2xf A 17% Part (b) Calculate the magnitude of the angular velocity of the disk in rad/s at time t = 55 s. 17% Part (c) Write an expression for the average angular acceleration of the disk ae in terms of angular velocity. agve d a/d t X Attempts Remain 17% Part (d) Calculate the magnitude of the average angular acceleration of the disk ave from rest to 55 s in rad/s 17% Part (e) Write an expression for the period T of the disk in terms of frequencyf T- 1/ Correct! 17% Part () Calculate the magnitude of the period of the disk T at time t55 s in seconds. Grade Summary Deductions Potential T- 100% Subemissions Atlempts remaining es per attempt) detailed view 7 nos tan) sin) cos) 4 acos) cotan) asin) acotan) sinh) atan) 0% cotanh) 0 cosh) ODegrees tanh) Radians Vo BACKSPAC CA 1give p Fredback Submit Hint Feedback: 0s deduction per foedhack Hints: 0% deduction per hint. Hints remaining 3

Answer 1

Partb f- 4 S Pm at t55 s sd 4.71 ads 3

Part C) w(Ei) dave Par t) lave 4.71 65 nd/ s 2 o 08S6 4 Yave Part T Yf T = Te 333 H2