Fluid friction is a common occurrence in our daily lives. We’ll look at 25 different fluid friction examples in this post.
Fluid friction examples:
- Fish swim
- Sailing ship
- Shooting star
- Flying bird
- Hot air balloon
- Walking in a storm
- Lubricants in hinges
- Water splash
- Stirring coffee with a spoon
- Sucking fluid via straw
- Moist glass plates stuck
- Water dive
- Air squeezing
- Damping vibration
- Toothpaste squeezing
- Walking on an oily surface
- Ink flow in a pen
- Flow of fluid
- Shaving cream
- Object grip
- Surface cleaning
- Windsock direction
The fish’s body experiences fluid friction in the water. Fishes’ streamlined shapes assist in reducing friction between their bodies and the water in which they travel. So they can move freely in the water.
Boats and ships have narrow front and sloping sides. This is known as a streamlined shape. The streamlined shape of a boat or ship is inspired by nature, such as fish and birds, and helps to decrease friction when sailing through the water.
A shooting star can be observed in a clear night sky. Meteors are tiny bits of rock material floating through space. When a meteor falls from space and enters the Earth’s atmosphere, it collides with the air. Because a meteor’s speed is relatively high, it encounters a lot of friction when travelling through air. This produces heat and has a high flame. The burning meteor creates a trail that resembles a shooting star.
Because they fly at such a great speed, flying birds also experience friction. Despite the fluid friction provided by air, their streamlined shape allows them to fly at great speeds. Therefore, even at high wind speed, birds are capable of flying with more friction.
Airplanes traveling through the air are also subjected to friction. Because planes travel at such a great speed, the friction between them and the air is relatively high. The surface of the planes heats up owing to friction. The plane’s interior is insulated to keep passengers safe from the heat generated on the surface.
Hot air balloon:
Drag will be observed in hot air balloons as they rise and travel through the air. As the balloon climbs, friction develops between the moving balloon and the molecules of air it encounters. Drag and gravity work against the motion of the balloon. A balloon can only rise in the air if the lift is higher than the drag and force of gravity; otherwise, it cannot.
Walking in a storm:
You may have walked in a storm before. The fast speed of the wind makes it harder to go-ahead during a storm because the fluid friction between you and the air increases while you are outside in a storm.
When you dip beneath a wave while surfing, you experience fluid friction because you are moving through the water. Furthermore, the surface of the surfboard is slippery, to begin with. This is why wax should be used to improve friction and grip.
Skydiving is based on the interplay of gravity and air resistance. Gravity pulls the skydiver down when he jumps out of the plane. When the drag of air resistance equals gravity, the parachute’s descent slows.
Lubricants in hinges:
Lubricants are used to minimize friction in hinges because they allow smooth movement between two surfaces of the apparatus by replacing fluid friction with dry friction. Generally, to lubricate instruments, we use oil.
If you drop a marble into a fluid, the amount of fluid splashed depends entirely on the density or viscosity of the liquid. A fluid having high viscosity, such as honey, produces fewer flashes, whereas a fluid with a low viscosity produces more.
Stirring coffee with a spoon:
When you stir the coffee with a spoon, fluid friction occurs. The friction resists the motion of the spoon, causing movement in the fluid.
Sucking fluid via straw:
Fluid friction creates some resistance while sucking fluids via a straw. As a result, drinking thick fluids with a straw is more challenging than drinking thin fluids.
Moist glass plates stuck:
If there are two thin glass plates with a moist surface, then they get stuck. In such a situation, you have to hold the top plate since the bottom plate won’t fall because of the fluid friction.
You may be aware that divers always plunge into the water with their hands spread out. It allows the diver to decrease friction and move more freely since it provides a streamlined body position.
You feel air resistance as you throw your hand outside a moving car. Air keeps squeezing your hand.
Fluid friction is high in viscous fluids. As a result, viscous fluids are utilized for safeguarding any system against vibrations and shocks.
Thin fluids may be easily squeezed from a tube. Squeezing a high-friction fluid-like toothpaste, on the other hand, requires more effort.
Walking on an oily surface:
The oil acts as a lubricant, reducing friction on the surface. As a result, an oily surface becomes slippery to walk on.
Ink flow in pen:
Fluid friction regulates ink to flow through the pen. Otherwise, controlling the flow of ink onto paper would be quite difficult.
The flow of fluid:
Low-friction fluids flow quickly, whereas viscous fluids move slowly. Honey and oil, for example, flow at a slower rate than water.
Shaving cream is used to protect the skin from harm. By forming a thin layer between the skin and the razor blade, it reduces friction.
To grasp an object, one requires a grip, which friction provides. However, if your hands are moist, the fluid lowers friction, making it difficult to hold an object.
Fluid is used to clean the surface that has dust particles on it. Fluid decreases friction between dust particles and the surface. As a result, cleaning a wet surface will be easier than cleaning a dry one.
The windsock directs us to the airflow. Due to air resistance, it will orient itself toward the wind flow; otherwise, it would continue to move.
Frequently Asked Questions on Fluid Friction:
Q.What are the types of friction?
Ans. Friction is the force that resists an object’s motion. There are four different types of friction forces:
Q. What is fluid friction?
Ans. As gases and liquids flow, their common name in science is fluid.
Fluid friction is defined as the force that restricts the movement of an object inside a fluid (air or liquid). Relatively moving fluid layers are responsible for fluid friction.
Q. What is another name of fluid friction?
Ans. Fluid friction occurs within the fluid.
The friction that opposes fluid movement is termed fluid friction, often known as drag.
Q. Is swimming an example of fluid friction?
Ans. The physics of swimming includes a swimmer and water interaction.
While swimming in the water, the swimmer encounters friction between his body and the water. Swimming is the best illustration of fluid friction since friction is applied by fluid.
Q. How can fluid friction be reduced?
Ans. To enhance the speed of an object and make it flow smoothly in a fluid, fluid friction must be reduced.
Objects traveling in a fluid, such as a car, an airplane, a boat, or a bullet, should have streamlined shapes to enhance speed by reducing friction.
Q. What does fluid friction depend upon?
Ans. The following are some of the factors that influence fluid friction:
- Fluid’s nature: Fluids with a high density have high fluid friction because they are highly resistant to motion. A dropped ball, for example, travels faster in the air than in water and slower in honey than in water.
- The shape of the object: Pointing fronts and sloping sides; this shape is called streamlined shape. The streamlined figure feels less drag than other shapes. For example, a car can move faster than a bus at the same speed due to its streamlined shape.
- Speed of object: The friction of the fluid in which the object is traveling is directly proportional to the object’s speed. The speed of a jet and a supersonic aircraft is faster than that of an airplane. So they encounter greater friction than airplanes, and they are built of strong materials to protect themselves from the heat created by friction.
- Size of object: As the size of an object or body grows larger, fluid resistance increases. This is the reason why blue whales experience higher friction than small fishes.
- Temperature: The square root of absolute temperature is proportional to the fluid friction of gases. As a result, fluid friction increases as the temperature rises.