ENGINEERING FUNDAMENTALS 151

Rube Goldberg DesignRyan Hodges

Tom Singleton Travis VaughnMichael Ewing

Schlooders Mcgoovers

Materials 1” PVC pipe Three 45 g steel balls, One 67 g steel

ball Funnel Plastic cup, Bottom of Plastic Bottel 2 pulleys and string Wood Mousetrap Dominos Ipod and speaker

Step One• Conservation Of Energy

• ½ mv2 + mgh = ½ mv2

2 + mgh2

• Mass – 45 g

• PVC pipe

Step Two• Projectile Motion• y – yo = (x – x0) tanϴ- 2/gvo

2 (1 + tan2ϴ)(x – x0)2

• Torque• τ = r x F

• Plastic Cup, Funnel, Pulley with string

Step Three• Center Of Mass• M1R1 + M2R2… MnRn M1+ M2 ... Mn

• 67 g piece of wood

• One 67 g steel ball

• One 45 g steel ball

Step Four• Torque • τ = r x F

•Conservation of energy• ½ mv2 + mgh = ½ mv2

2 + mgh2

• Bottom of plastic bottle, pulley, PVC pipe

Step Five• Elastic Collisions• M1V1 + M2V2 = M1V1’ + M2V2’

V1 – V2 = -(V1’ – V2’)

• Dominos

Step Six• Force of Mousetrap

• Hooke’s Law F = kx

• Unplugs Ipod turning off song

THANK YOU