140_Dynamics 11ed Manual

140_Dynamics 11ed Manual - shore will the boats be at a...

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

View Full Document Right Arrow Icon
Engineering Mechanics - Dynamics Chapter 12 v BA v Bv v Av = v BA 20 17.321 mi hr = v BA 26.458 mi hr = a Av v' A 0 = a Av 400 0 mi hr 2 = a Bv v' B sin θ () cos () v B 2 r cos () sin () + = a Bv 1.555 10 3 × 26.154 mi hr 2 = a BA a Bv a Av = a BA 1955 26 mi hr 2 = a BA 1955 mi hr 2 = * Problem 12-200 Two boats leave the shore at the same time and travel in the directions shown with the given speeds. Determine the speed of boat A with respect to boat B . How long after leaving the
Background image of page 1
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: shore will the boats be at a distance d apart? Given: v A 20 ft s = 1 30 deg = v B 15 ft s = 2 45 deg = d 800 ft = Solution: v Av v A sin 1 ( ) cos 1 ( ) = v Bv v B cos 2 ( ) sin 2 ( ) = v AB v Av v Bv = v AB 20.607 6.714 ft s = t d v AB = v AB 21.673 ft s = t 36.913 s = 138...
View Full 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