What is a thrust and a buyaunt force.Please explain it with examples
What is a thrust and a buyaunt force.Please explain it with examples
The reaction force exerted on a body in the opposite direction of the applied force.
When a system expels or accelerates massin one direction, the accelerated mass will cause a force of equal magnitude but opposite direction on that system. The force applied on a surface in a direction perpendicular or normal to the surface is called thrust. Force, and thus thrust, is measured in the SI as the newton (symbol: N), and represents the amount needed to accelerate 1 kilogram of mass at the rate of 1 meter per second per second.
In aerospace Thrust is the force which moves an aircraft through the air. Thrust is used to overcome the drag of an airplane, and to overcome the weight of a rocket. Thrust is generated by the engines of the aircraft through some kind of propulsion system
Eg1: Rockets propel gases downward and the resulting thrust makes them move forward in the opposite direction.
Eg2:Reverse thrust can be generated to get braking effect after landing by reversing the pitch of propeller blades, or using a thrust reverser on a jet engine.
Eg3:A motorboat generates thrust (or reverse thrust) when the propellers are turned to accelerate water backwards (or forwards). The resulting thrust pushes the boat in the opposite direction
Buoyancy is, basically, the ability of something to float or rise in a fluid. Simple as that. More scientifically, buoyancy refers to a force that arises from the pressure exerted on an object by a fluid (a liquid or a gas). Since it's a force, we call it the buoyant force.
You can think of the buoyant force as an upward thrust, a force that moves a body in the upward direction. Consequently, it helps counter the downward pull of gravity upon the same object. The buoyant force exists regardless of whether the object is floating or is submerged in the fluid, and the magnitude of the buoyant force is equal to the weight of fluid that's displaced by the object.
TYPES
Positively buoyant, the object floats. That's like our cruise ship. What does this mean? It means that this entire object is less dense than the fluid in which it is located. Now, clearly we know that the metal that makes up our ship is denser than water, and so we'd think it would sink in water.
the entire ship needs to have a greater ratio of empty space to mass than the water it is sitting on. It is less dense because it has relatively more empty space than mass - that's it. In the case of positive buoyancy, an object's buoyant force is greater than the gravitational force, and so the object floats. And if you were to submerge the object, it would float to the surface. This is like placing a wine cork into water.
A neutrally buoyant object has a buoyant force that's equal to the gravitational force, so the object doesn't sink, nor does it float. That means it stays where it's placed vertically in a fluid medium. Submarines and divers use this concept to stay in the same vertical position within water.
An object is said to be negatively buoyant if the buoyant force is less than the gravitational force. This means the object
When a system expels or accelerates massin one direction, the accelerated mass will cause a force of equal magnitude but opposite direction on that system. The force applied on a surface in a direction perpendicular or normal to the surface is called thrust. Force, and thus thrust, is measured in the SI as the newton (symbol: N), and represents the amount needed to accelerate 1 kilogram of mass at the rate of 1 meter per second per second.
In aerospace Thrust is the force which moves an aircraft through the air. Thrust is used to overcome the drag of an airplane, and to overcome the weight of a rocket. Thrust is generated by the engines of the aircraft through some kind of propulsion system
Eg1: Rockets propel gases downward and the resulting thrust makes them move forward in the opposite direction.
Eg2:Reverse thrust can be generated to get braking effect after landing by reversing the pitch of propeller blades, or using a thrust reverser on a jet engine.
Eg3:A motorboat generates thrust (or reverse thrust) when the propellers are turned to accelerate water backwards (or forwards). The resulting thrust pushes the boat in the opposite direction
Buoyancy is, basically, the ability of something to float or rise in a fluid. Simple as that. More scientifically, buoyancy refers to a force that arises from the pressure exerted on an object by a fluid (a liquid or a gas). Since it's a force, we call it the buoyant force.
You can think of the buoyant force as an upward thrust, a force that moves a body in the upward direction. Consequently, it helps counter the downward pull of gravity upon the same object. The buoyant force exists regardless of whether the object is floating or is submerged in the fluid, and the magnitude of the buoyant force is equal to the weight of fluid that's displaced by the object.
TYPES
Positively buoyant, the object floats. That's like our cruise ship. What does this mean? It means that this entire object is less dense than the fluid in which it is located. Now, clearly we know that the metal that makes up our ship is denser than water, and so we'd think it would sink in water.
the entire ship needs to have a greater ratio of empty space to mass than the water it is sitting on. It is less dense because it has relatively more empty space than mass - that's it. In the case of positive buoyancy, an object's buoyant force is greater than the gravitational force, and so the object floats. And if you were to submerge the object, it would float to the surface. This is like placing a wine cork into water.
A neutrally buoyant object has a buoyant force that's equal to the gravitational force, so the object doesn't sink, nor does it float. That means it stays where it's placed vertically in a fluid medium. Submarines and divers use this concept to stay in the same vertical position within water.
An object is said to be negatively buoyant if the buoyant force is less than the gravitational force. This means the object
