Calculating Buoyancy (# Pennies) Penny Barge Design

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Presentation transcript:

Calculating Buoyancy (# Pennies) Penny Barge Design Mr. Yersak Livingston High School Technology & Design I

Dimension your vessel Length – Width - Height 2” 4” 3”

Determine the Volume of the Barge 2” 4” 3” HOW TO: LENGTH x WIDTH x HEIGHT = VOLUME 24 cu. in.

How many inches are there in a cubic foot? 1,728

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

The weight of water 64 pounds per cubic foot

Determine the pounds of water displaced by the barge. HOW TO: .013 cubic feet x 64 lbs. per c^3 ft. =.832 pounds displaced

Determine the mass of the barge 2” 4” 3” Aprox. 100 Grams

Grams in a Pound? 1 pound = 453.6 grams

Convert grams to pounds 2” 4” 3” .22 pounds HOW TO: 100 / 453.6 = .22 pounds

Subtract weight of barge from weight of displaced water to find penny load HOW TO: .832- .22 = .612 pounds of pennies

Convert penny load lbs. into mass: HOW TO: .612 x 453.6 = 277 grams of pennies

What is the mass of a penny? 2.78 grams

Estimated pennies the barge can hold. HOW TO: 277 grams of pennies / 2.78 mass of pennies = 99 pennies

THE HMS YERSAK  AFTER IT HIT NATHAN’S BOAT