Table of Contents

- 1 When the weight of an object is equal to the buoyant force the object will sink?
- 2 Does the buoyant force on a submerged object depend on the weight of the object?
- 3 When the buoyant force on a submerged object is equal?
- 4 What happens if the buoyant force is less than the weight of an object?
- 5 What 2 forces must be balanced for an object to float?
- 6 Why is a heavier object more likely than a lighter object to sink instead of float in water?
- 7 How do you find the percentage of an object submerged in water?
- 8 What causes objects to float or sink?
- 9 What happens when the buoyancy of an object is greater than its weight?
- 10 Which is greater the upward force or the buoyant force?

## When the weight of an object is equal to the buoyant force the object will sink?

If the object displaces an amount of water equal to its own weight, the buoyant force acting on it will be equal to gravity—and the object will float. But, if the object weighs more than the water it displaces, the buoyant force acting on it will be less than gravity, and it will sink.

### Does the buoyant force on a submerged object depend on the weight of the object?

Buoyant force has NO dependency on the weight of the object itself. It does depend on the volume of the object, but that is because the volume of the object will be the same as the volume of liquid displaced. If either weight density or volume is increased, the buoyant force will increase by that same factor.

#### When the buoyant force on a submerged object is equal?

The buoyant force on a submerged object is equal to the weight of the fluid displaced. This principle is useful for determining the volume and therefore the density of an irregularly shaped object by measuring its mass in air and its effective mass when submerged in water (density = 1 gram per cubic centimeter).

**What effect does a buoyant force have on a submerged object?**

How does the buoyant force affect a submerged object? The buoyant force acts upward on a submerged object, making the object seem lighter.

**Do heavier objects have more buoyant force?**

A: The buoyant force can actually act on heavy objects. The reason some objects sink in fluid is because they are denser than the fluid and therefore they experience a stronger gravitational force than buoyant force. If you submerge a heavy bowling ball in water, it will float since it is less dense than water.

## What happens if the buoyant force is less than the weight of an object?

If the buoyant force is less than the object’s weight, the object will sink. If the buoyant force equals the object’s weight, the object will remain suspended at that depth. The buoyant force is always present in a fluid, whether an object floats, sinks or remains suspended.

### What 2 forces must be balanced for an object to float?

To float, the weight force on an object must be balanced by the upward push by the water on the object. The amount of material and the type of material that makes up the object affects the size of the weight force on the object.

#### Why is a heavier object more likely than a lighter object to sink instead of float in water?

That’s because density affects weight. A given volume of a denser substance is heavier than the same volume of a less dense substance. For example, ice is less dense than liquid water.

**Where is water pressure the greatest on a submerged object?**

Terms in this set (13)

- bottom of a submerged object. Water pressure is greatest against the.
- both of these.
- 1000 kg.
- upward pressure against the bottom is greater than downward pressure against the top of the submerged object.
- volume of fluid.
- both of these.
- 100 tons.
- by a force equal to the weight of liquid displaced.

**What is the buoyant force of a floating object?**

Buoyant force is the net upward force on any object in any fluid. If the buoyant force is greater than the object’s weight, the object will rise to the surface and float. If the buoyant force is less than the object’s weight, the object will sink.

## How do you find the percentage of an object submerged in water?

Thus: by dividing the less dense object by the denser fluid displaced, the percentage volume of the object that is submerged, which is equal to the volume of displaced water, is determined. Subtracting 100 from this give the percentage that floats.

### What causes objects to float or sink?

An object floats when the weight force on the object is balanced by the upward push of the water on the object. If the weight force down is larger than the upward push of the water on the object then the object will sink. If the reverse is true then the object will rise – rising is the opposite of sinking.

#### What happens when the buoyancy of an object is greater than its weight?

If the buoyant force is greater than the object’s weight, the object rises to the surface and floats. If the buoyant force is less than the object’s weight, the object sinks. If the buoyant force equals the object’s weight, the object can remain suspended at its present depth.

**Why does an object float if its density is less than the surrounding fluid?**

If an object’s average density is less than that of the surrounding fluid, it will float. The reason is that the fluid, having a higher density, contains more mass and hence more weight in the same volume. The buoyant force, which equals the weight of the fluid displaced, is thus greater than the weight of the object.

**How is the buoyancy of an object determined by Archimedes?**

Now, we’ll calculate this force using Archimedes’ principle. The buoyancy force on the cylinder is equal to the weight of the displaced fluid. This weight is equal to the mass of the displaced fluid multiplied by the gravitational acceleration: Buoyant force: The fluid pushes on all sides of a submerged object.

## Which is greater the upward force or the buoyant force?

This means that the upward force on the bottom of an object in a fluid is greater than the downward force on top of the object. There is an upward force, or buoyant force, on any object in any fluid ( (Figure) ). If the buoyant force is greater than the object’s weight, the object rises to the surface and floats.