engineering fundamentals Discussion Forum
Directory | Career | News | Standards | Industrial | SpecSearch®
Home Membership Magazines Forum Search Member Calculators






List Recent Topics | Start a New Topic

<< Previous Message No. 10920 Next >>
Author: rolschwarz
Time: 03/31/03 08:26 PST
This is a reply to message no. 10917 by sluggishh
Reply | Original Message | New Topic | List Topics | List Messages on This Topic
Current Topic:
collision problem...
Try thinking of this as a "classic" sliding block crashing into a compression spring.  The block will deflect the spring until the KE is absorbed by the spring work:
k= spring constant (force per unit deflection distance) (remember F=kx?)
x = spring deflection from initial free position

Once the spring has absorbed the KE, it will be deflected, and will exert a force on the block and bounce it back.

Once this makes sense to you, substitute the cantilevered rod for the spring.

The collision will be mostly elastic, unless the rod experiences permanent deformation.  Some energy is always lost due to friction.
[ List Replies to This Message Only ]

Home  Membership  About Us  Privacy  Disclaimer  Contact  Advertise

Copyright © 2018 eFunda, Inc.