HW1_Assg - Mechanical Vibrations Homework #1 Due: 3Sep04 -...

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: Mechanical Vibrations Homework #1 Due: 3Sep04 - Start of Class Part 1: Remember your kinematics ! 1. A baseball bat with a length of l is cho- sen by the batter shown in Figure 1. The mo- tion of the bottom portion of the bat, the part closest to the batters hands, can be described by the following vector that is taken with refer- ence to the stationary right shoe of the batter ~ r b/s = a cos( t ) I + bsin ( t ) J + 1 K . The angular rotation of the bat about hands of the batter is given by ~ = k . Find an expression for the bat speed and acceleration at the big end of the bat as a function of time. Figure 1: Illustration of a batter getting ready to crank a homerun. The following are interesting sites to learn more about the physics of baseball. http://www.npl.uiuc.edu/ a-nathan/pob/ http://wings.avkids.com/Book/Sports/instructor/knuckleball-01.html Part 2: Work the following problems 1. Develop the equations of motion for the system shown in Figure 2 by two different methods:...
View Full Document

Page1 / 2

HW1_Assg - Mechanical Vibrations Homework #1 Due: 3Sep04 -...

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