1. The Lazy Man’s Flag Raiser
EF 151
Fall 2006

2. Team ERTS™ Everett Stiles Ryan Trentham Tim McLerran Freshman
Thompsons Station, TN
Computer Engineering
Ryan Trentham
Sevierville, TN
Electrical Engineering
Tim McLerran
Hermitage Springs, TN
Aerospace Engineering

3. The Lazy Flag Raiser
Our device takes advantage of spring energy and gravitational potential energy to complete its task.
The task is a unique way to raise a flag.

4. Energy Conversions Potential Spring Energy -> Kinetic Energy
From the release of the spring, energy is transferred to the ball
Kinetic Energy -> Gravitational Potential Energy
The ball is projected up a ramp to a stop
Gravitational Potential Energy -> Kinetic Energy
The cup and ball system converts its potential energy to kinetic

5. Conclusions Successful? Yes Learned
the application of the concepts from the previous modules to actual real life scenarios
Don’t touch hot glue
Problems? Hot glue not adhering to surfaces and stability
Do Differently: Plan ahead more.