117_Dynamics 11ed Manual

117_Dynamics 11ed Manual - Engineering Mechanics - Dynamics...

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
Engineering Mechanics - Dynamics Chapter 12 θ '' a sin () 2 r' ' r = '' 0.00404 rad s 2 = Problem 12–163 For a short time the bucket of the backhoe traces the path of the cardioid r = a (1 cos ). Determine the magnitudes of the velocity and acceleration of the bucket at θ = 1 if the boom is rotating with an angular velocity ' and an angular acceleration ' ' at the instant shown. Given: a 25 ft = ' 2 rad s = 1 120 deg = '' 0.2 rad s 2 = Solution: θθ 1 = ra 1 cos = r' a sin ' = r'' a sin '' a cos ' 2 + = vr ' 2 r ' 2 + = v 86.6 ft s = a r'' r ' 2 2 r '' 2 r' ' + 2 + = a 266 ft s 2 = * Problem 12-164 A car is traveling along the circular curve having a radius
Background image of page 1
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 08/16/2011 for the course EGN 3321 taught by Professor Christianfeldt during the Spring '08 term at University of Central Florida.

Ask a homework question - tutors are online