Thread: Calculating Buoyancy

Hi

Does anyone know how to calculate how much volume of air is required to make an object buoyant?

I'm about to construct a floating golf green and would like to know how much volume of air will be required to make it float. Is there a simple equation that could give me this volume? I'd like to go about this scientifically rather than just shoving random numbers of air tight containers underneath!

What measurements do I require other than the mass of the object? I think this will be approximately 150kg.

Thanks in advance for any help you can give me.

Originally Posted by rhyster

Hi

Does anyone know how to calculate how much volume of ballast is required to make an object buoyant?

I'm about to construct a floating golf green and would like to know how much ballast I would need to make it buoyant. I want to know how much volume of air will be required to make it float. Is there a simple equation that could give me this volume? I'd like to go about this scientifically rather than just shoving random numbers of air tight containers underneath!

What measurements do I require other than the mass of the object? I think this will be approximately 150kg.

Thanks in advance for any help you can give me.

1. I assume that the object should float in water.

2. Since the ratio of water you must only make the volume sufficiently large. With your example: With a mass of 150 kg you need at least a allover volume of 150 dm³.