April 19, 2023

EF 151Final Team Project

The Power Switch for the Lazy Student

April 19, 2023

Team Members Brittany Arnold

Aerospace Engineering

Paul Fox Industrial

Engineering Samantha Koelman

Industrial Engineering

Adam Tuesburg Nuclear Engineering

April 19, 2023

Purpose:

Our device was designed to help a student turn his/her stereo on when he or she firsts get back from a long day of classes on the hill. The student has no remote control and it is too far away to reach while sitting in their chair. So this device turns the stereo on with just a pull of a string.

April 19, 2023

Step 1: Pull a string to get

device started. Releases a marble.

April 19, 2023

Step 2: Marble rolls down a

chute. Marble sets off the

trap. Trap releases and

pulls a string to release the holding peg.

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Step 3: Holding peg is

pulled out. Rubber band is

released.

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Step 4: Rubber Band

shoots the rod. Rod is pushed with

enough force to turn on the stereo.

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Step 5: Stereo is turned

on. Student can now

enjoy listening to his favorite radio station.

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Potential to Kinetic Energy

mgh = .5mv2

(.005kg)(9.81m/s2)(.27305m) = .5(.005kg)v2

.0133931025kg m2/s2 = .0025kgv2

5.357241 m2/s2 = v2

V = 2.31457145061m/sV = 2.31 m/s

April 19, 2023

Elastic Potential to Kinetic

.5kx2 = .5mv2

.5(.000934168957761 kg/s2) (8.0012m2) = .5(.004kg)v2

.029900880467 kg m2/s2 = (.002kg)v2

14.9504402335 m2/s2 = v2

3.86657991428 m/s = v3.87 m/s = v

April 19, 2023

Elastic Potential to Kinetic

.5kx2 = .5mv2

.5(11.098 kg/s2)(.10162m2) = .5(.04kg)(v2)(.057279885 kg m2/s2) = (.02kg)v2

2.863994272 m2/s2 = v2

1.69 m/s = v

April 19, 2023

Conclusions:

Overall the device was successful

It is possible to build a device that uses three different energy forms.