Assuming that the drum itself has no mass and weight, calculate the mass of the liquid in which you want to place the drum. Use the formula:
mass = density x volume
The amount of mass to sink the drum will have to be that amount, or more.
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Depends. A cubic meter of WHAT? If it's a cubic meter of lead, it would weigh quite a bit. A cubic meter of air, not so much. The standard substance that is used to relate metric measurements to each other is water. The "gram" was defined as the mass (not weight, but similar) of one cubic centimeter of water at normal temperature. There are 1 million cubic centimeters in a cubic meter, so a cubic meter of water would have a mass of 1 million grams, or 1,000 kilograms, or 1 metric ton. To obtain the mass of 1 cubic meter of some other substances, simply multiply the specific gravity of the substance by the mass of a cubic meter of water.
"The density is 3,000 kg per cubic meter." That tells you that every cubic meter of it has 3,000 kg of mass.There are 6 cubic meters in 6 cubic meters.Each cubic meter has 3,000 kg of mass.So in 6 cubic meters, there are (6 x 3,000) = 18,000 kgof mass
That depends on the mass, pressure, and temperature of the air in the cubic meter.
You can’t. For volume you would use mass divided by density. A material that is heavier per cubic meter of volume will weigh more than a material that is lighter per cubic meter of volume if the materials are the same volume
1300 gram