hw11solution - Homework 11 Solution CHANG 1 The first stage...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Homework 11 Solution CHANG 1 The first stage of rotation has a constant angular acceleration, so at the end of stage 1 the angular velocity 1 and angular position 1 can be formulated as: 1 1 t 1 20 20 1 t 1 1 2 1 t 1 2 1 2 20 2 200 In the second stage the rotation has constant angular velocity, so we know 2 1 and 2 0. At the end of the 60-second rotation, we can set up the total angle of rotation to be 1 1 t 2 4000 200 20 60 20 4 rad/s 2 CHANG 2 There are three parts in the entire rotation: the accelerating stage, constant velocity stage, and the decelerating stage. We first find the angular velocity 1 and the angular position 1 at the end of the first accelerating stage, with 0: t 1 1 t 1 5 8 40 rad/s t 1 2 t 2 1 t 1 1 2 1 t 1 2 1 2 5 8 2 160 rad Since the angular velocity remains constant for stage 2, at the end of the second part of the rotation the angular velocity 2 and angular position 2 can be found to be 2...
View Full Document

Page1 / 3

hw11solution - Homework 11 Solution CHANG 1 The first stage...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online