Buoyant Force in Action: Weight of Displaced Water!

The video tutorial explains the concept of buoyant force as the weight of the fluid displaced by an object. It demonstrates the changes in tension force when a rock is submerged in water, using a force sensor to measure these changes. The tutorial also covers the water displacement method to determine the volume of an irregularly shaped object and calculates its density. The experiment validates the principle that the buoyant force equals the weight of the displaced fluid, with a minor discrepancy in measurements.

What is the initial tension force equal to when the rock is not submerged in water?

• The mass of the rock

• The net force

• The force of gravity

• The buoyant force

When the rock is submerged in water, what additional force acts on it?

• Electrostatic force

• Buoyant force

• Magnetic force

• Frictional force

How is the change in tension force related to the buoyant force?

• It is twice the buoyant force

• It is equal to the buoyant force

• It is the negative of the buoyant force

• It is half the buoyant force

What does the water displacement method help determine about the rock?

• Its volume

• Its density

• Its weight

• Its mass

What is the volume of the rock if 140 milliliters of water is displaced?

• 140 cubic centimeters

• 140 grams

• 140 liters

• 140 newtons

How can the density of the rock be calculated?

• By multiplying its mass by its volume

• By dividing its mass by its volume

• By dividing its weight by its volume

• By adding its mass and volume

What is the approximate density of the rock if its mass is 368 grams and its volume is 140 cubic centimeters?

• 1.6 g/cm³

• 4.6 g/cm³

• 2.6 g/cm³

• 3.6 g/cm³