Presentation is loading. Please wait.

Presentation is loading. Please wait.

Rube-Goldberg Device EF_151 Sec. A-2 Fall 2006 Rube-Goldberg Device.

Similar presentations


Presentation on theme: "Rube-Goldberg Device EF_151 Sec. A-2 Fall 2006 Rube-Goldberg Device."— Presentation transcript:

1 Rube-Goldberg Device EF_ Sec. A-2 Fall 2006 Rube-Goldberg Device

2 Our Team Wes Tipton James Rushford George Quarles EF_151 Sec. A-2
Fall 2006 Rube-Goldberg Device

3 The Dam EF_ Sec. A-2 Fall 2006 Rube-Goldberg Device

4 Purpose Convert potential gravitational energy to useful electrical energy Stop water flow after a certain amount of water has passed through system with gravitational potential energy EF_ Sec. A-2 Fall 2006 Rube-Goldberg Device

5 Overview EF_ Sec. A-2 Fall 2006 Rube-Goldberg Device

6 Demonstration EF_ Sec. A-2 Fall 2006 Rube-Goldberg Device

7 Energy Conversions First Conservation Of Energy PE = KE gh = ½ v^2
Theoretical v_water = 6.26 m/s EF_ Sec. A-2 Fall 2006 Rube-Goldberg Device

8 Energy Conversions Second Conservation Of Energy
Theoretical E_out = ½ m(6.26)^2 m= change in volume of water (about 2L = 2Kg) Actual E_out = measured Measured: Volts/Resistance = current Current x Voltage = watts = .036 J/sec Watts x time = Joules Measure time (in sec.) for change in volume Actual/Theoretical x100 = %Efficiency EF_ Sec. A-2 Fall 2006 Rube-Goldberg Device

9 Energy Conversions Third Potential Energy
Float triggers elevated weight Force of weight due to gravity is greater than resistance forces on valve—pulls valve shut mgh > M_s Water stops flowing, system stops EF_ Sec. A-2 Fall 2006 Rube-Goldberg Device

10 Conclusions Inefficient System
Energy is lost during impact of water droplets to spoon Resistance Forces Water in tubing Friction on turbine But still pretty awesome EF_ Sec. A-2 Fall 2006 Rube-Goldberg Device


Download ppt "Rube-Goldberg Device EF_151 Sec. A-2 Fall 2006 Rube-Goldberg Device."

Similar presentations


Ads by Google