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Penny Barge Design

Penny Barge Design. Mr. Parrott Newton Falls High School Technology Education. The Problem:. Design and build a floating structure to be tested in class to hold as many pennies as possible before capsizing or sinking. Specifications:.

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Penny Barge Design

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  1. Penny Barge Design Mr. Parrott Newton Falls High School Technology Education

  2. The Problem: Design and build a floating structure to be tested in class to hold as many pennies as possible before capsizing or sinking.

  3. Specifications: • Structure may only consist of cardboard and glue/tape provided in lab. • Material may not exceed 12” x 12” surface area. • Structure may be waterproofed with latex paint. • Structure must float • Structure may not touch the tank when tested.

  4. How will we know we have built the craft to hold the maximum amount of pennies???

  5. PLANNING.

  6. What is displacement??? • Pools • Bathtubs • Kitchen Sinks • Turkey Fryers

  7. First, sketch your vessel. (KISS)

  8. 2” 3” 4” Dimension you vesselLength – Width – Height

  9. 2” 3” 4” Determine Volume of Barge Length x Width x Height = 24 cu in

  10. How many inches are there in a cubic foot? 1728

  11. 2” 3” 4” Divide Barge Volume by the # of cubic inches in a cubic foot. 24cu” / 1728 = .013 cubic feet

  12. The weight of Water 64 pounds per cubic foot

  13. Multiply the Cu.Ft. of the barge x the weight of water per cubic foot to determine pounds of water displaced by the barge. .013 x 64 = .832 pounds displaced

  14. Determine the mass of the barge Aprox. 100 grams

  15. How many grams are in a pound? 1 pound = 453.6 grams

  16. Convert grams to pounds 100 / 453.6 .22 pounds

  17. Subtract weight of barge from weight of displaced water to find penny load. .832 - .22 .612 pounds of pennies

  18. Convert penny load lbs into mass: .612 x 453.6 277 grams of pennies

  19. What is the mass of a penny? 2.78 grams

  20. Divide allowable penny mass by the mass of one penny to determine the number of pennies the barge can hold. 277 / 2.78 = 99 pennies ***Theoretically***

  21. Why could this number be less? • Workmanship • Loading • Other variables

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