Question

Help on all sections please

HW 07 (CH 7) Begin Date: 5/22/2017 1:00:00 PMDue Date: AM End Date: 6/28/2017 12:59:00 AM (8%) Problem 3: A disk with an initial angular velocity coo 5.5 rad s experiences a constant angular acceleration of α = 55 rad/s2 for a time period 75 s. Please answer the following questions. Randomized Variables a = 5.5 rad/s α = 5.5 rad/s2 75 s ▲ 20% Part (a) Write an expression for the magnitude of the angular velocity of the disk at time t in terms of the given parameters. Grade Summary Potential Late work % Late Potential 100% 50% 50% Submissions 1 2 3 s remaining: 5 (5% per attempt) detailed view 0 Hint I give up! Hints 4% deduction per hint. Hints remaining: 2 20% Part (b) Calculate the magnitude of the angular velocity of the disk in rad s at time t. ▲ 20% Part (c) write an expression for the magnitude of the angular displacement θ traveled by a point on the disk during the angular acceleration described in terms of the given parameters. Assume the point starts at an angular displacement of 0 radians 20% Part (d) Calculate the magnitude of the angular displacement in radians traveled by a point on the disk during the acceleration described ▲ 20% Part (e) Which of the following scenarios would result i Which of the following scenarios would result in the largest angular displacement traveled by a point on the disk, assuming all other properties stayed the same? O 2017 Expert TA,LL.C

Answer 1

Given data The initial angular velocity is a = 5.5 rad/s The angular velocity is α= 5.5 rad/s The time is t= 75 s The final angular velocity is The final angular velocity is 5.5+(5.5x 75) - 418 rad/s We know that 2 The displacement is = 5.5 (75)+0.5(5.5 x752 1.59 x10 rad The amount of time due angular acceleration occurred is double