Can anyone help me summarize how to measure buoyancy?

1.Secondary weighing: f float = g-f (g is the gravitational force experienced by the object, f is the reading of the spring scale in the liquid where the object is intruded).

2.Pressure difference method: f float = f up - f down.

3.Formula method: F float = p liquid v discharge g

4.Equilibrium method: F float = g matter (suitable for floating, suspension).

Look at the weight of the drained water.

1) Prepare a spring dynamometer, string, object roll finger (assuming it is a stone), water, and water tank.

2) Tie the stone with a string and hang it on a dynamometer to measure its gravity.

3) Lift the stone with a dynamometer, so that the stone slowly dives into the water tank filled with water and measures its tensile force.

4) Buoyancy = gravity - pull.

Density measurement by buoyancy is a common physical method that calculates the density of an object by measuring its buoyancy in a liquid. Here are six ways to measure density using floating grip spinal force:

1.Float method: The system of the object to be measured is placed on a float, placed in the middle of the liquid, and the density of the object is calculated by measuring the depth of the float.

2.Density bottle method: The object to be measured is placed in a bottle of known density, and the density of the object is calculated by measuring the weight and volume of the bottle.

3.Specific gravity method: The object to be measured is placed in a liquid of known density, and the density of the object is calculated by measuring the buoyancy and gravity of the object in the liquid.

4.Air flotation: The object to be measured is suspended in a bubble, and the density of the object is calculated by measuring the volume and weight of the bubble.

5.Suspension method: The object to be measured is suspended on a spring scale, put it in liquid, and the density of the object is calculated by measuring the elongation of the spring scale.

6.Mercury method: The object to be measured is placed in a column of mercury, and the density of the object is calculated by measuring the height and density of the column of mercury.

In addition to the above six methods, there are some other methods of density measurement using buoyancy, such as the use of acoustic waves, optics and other techniques for measurement. In practical application, these methods can be selected according to different needs and conditions.

[Physics] [generation and judgment of buoyancy]-weighing method to measure the magnitude of buoyancy.

Method 1: Experimental method.

Method 2: Differential pressure method.

Method 3: Equipoise method.

Method 4: Archimedes' principle.