This cache is part of the Linn Creek Trail: Marshalltown History series. Follow the bike trail to a series of caches highlighting prominent figures in Marshalltown history. Each cache will require you to leave the trail and search for a hidden cache. The caches in this series vary in difficulty and terrain.
Christopher Clover
Christopher was born and raised in Marshalltown. He earned MS and BA degrees in aerospace engineering, an MBA with a strategic planning emphasis, and a PhD in mechanical engineering from Iowa State University.
Clover has served as president and CEO of Mechdyne Corporation since founding the company in 1996. In 2001, he was awarded the Ernst & Young Entrepreneur of the Year Award for the Technology Division, Midwest Region, in recognition of Mechdyne’s achievements. In 2009, Iowa State University awarded Chris a Professional Progress in Engineering Award. He received the Honeywell Foundation Engineering and Business Fellowship and the Iowa State University Research Excellence Award in recognition of outstanding research accomplishments in the engineering program.
Chris has been widely published in the areas of robotics, haptic feedback, control system design, vehicle simulation, vehicle handling and maneuvering, rollover, and tire mechanics.
Source: https://www.mechdyne.com/bio.aspx?id=46&name=Chris+Clover
The Challenge
Cache is not at the posted coordinates.
Statics is the study of forces in equilibrium, that is, on bodies that are either at rest or move with a constant velocity.
Final Location:
N 42° 01.ABC’
W 92° 56.DEF’
Solve the following Statics problems for the unknown values.
- Concurrent 2D equilibrium
Consider a 0.51 kg object (FA) hanging by 2 cables (FB and FC) as shown.
Determine the 3 forces FA, FB, and FC.
Round all final values to 1 digit.
A= FA
B= FB
C= FC
- 2-D rigid body, parallel forces
Consider a massless beam, 10.0 m long, supporting a 17 N object at 5.3 m from FD, as shown.
Determine the 2 forces, FD and FE.
Round all final values to 1 digit.
D = FD
E = FE
- F = the net force on a body in equilibrium.
References:
- Physics for Scientists & Engineers Third Edition, Douglas C. Giancoli
Chapter 12 Static Equilibrium
See p. 302 Example 12-2 and p.304 Example 12-5
- Fundamentals of Physics 2nd edition, Halliday and Resnick
See p. 70 Example 5 and p. 209 Example 1
- Engineering Mechanics: Statics 12th edition, Russell C. Hibbeler
https://www.pdfdrive.net/statics-rc-hibbeler-12th-bookpdf-e33404766.html
See p. 91 Example 3.2 and p. 216 Example 5.5
DISCLAIMER: Geocaching, like most outdoor sports, involves risk to the participant. These risks include injury, death, and damage to personal property. Contributing factors to these risks include but are not limited to terrain and weather, as well as the fitness level and experience of the participant. By engaging in the hunt for this geocache the participant agrees to assume all risks and absolve the cache owners of any liability.
That stated, accessing this cache does have some risks. The risk level increases with wet, snowy or muddy conditions. Use care and common sense while geocaching, and have SAFE fun!