 Lab Report

Title: Testing Neutral Buoyancy with Different Objects

Problem Statement: How is neutral buoyancy attained?

Method & Materials:

Hypothesis:

Weight of 2 four pound weights: 8 pounds

Weight of 2 four pound weights underwater: 7.2432 pounds

Amount of air it takes to lift the two weights: 3.29 liters

Weight of bowling ball: 16 pounds

Weight of bowling ball underwater: 4.12 pounds

Amount of air it takes to lift the bowling ball: 1.87 liters

Weight of 1 eight pound weight: 8 pounds

Weight of 1 eight pound weight underwater: 5.57 pounds

Amount of air it takes to lift the weight: 2.53 liters

Results:

Conclusion:

Neutral Buoyancy is attained when an object is the same weight as the water it displaces. For example, if a bowling ball weighs four pounds and displaces four pounds of water, it is

neutrally buoyant. Whereas if a bowling ball weighs four pounds and only displaces 1.8

pounds of water than the ball will sink. The ball would weigh 2.2 pounds underwater and

if the ball was in our lift bag, one liter of air would need to be added to make the ball neutrally

buoyant.