newton's law working model (Newton first, second & thrid law) Science Project | howtofunda
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Short explanation :
1) Newton's first law of motion, also known as the law of inertia, states that an object will remain at rest or in uniform motion in a straight line unless acted upon by an external force. In other words, if an object is stationary, it will remain stationary unless a force acts upon it.
An example of Newton's first law of motion is a book sitting on a table. The book is at rest and will remain at rest unless an external force acts upon it. If someone were to push the book, it would move across the table until it encounters another force that stops it, such as friction or hitting the edge of the table.
2) Newton's second law of motion states that the acceleration of an object is directly proportional to the force acting on it, and inversely proportional to its mass. In mathematical form, the law can be written as:
F = ma
Where F is the net force acting on an object, m is the mass of the object, and a is the acceleration produced by the force.
This means that if you apply a greater force to an object, it will accelerate more, and if the mass of the object is increased, it will require more force to produce the same acceleration.
For example, if you push a shopping cart with a force of 10 Newtons, it will accelerate at a certain rate. If you push the same cart with a force of 20 Newtons, it will accelerate at a greater rate. Similarly, if you push a car with a force of 1000 Newtons, it will accelerate more than if you push a bicycle with the same force.
3)Newton's third law of motion states that for every action, there is an equal and opposite reaction. In other words, when one object exerts a force on another object, the second object exerts an equal and opposite force on the first object.
This law can be stated mathematically as follows:
F₁ = -F₂
Where F₁ is the force exerted by the first object on the second object, and F₂ is the force exerted by the second object on the first object. The negative sign indicates that the forces are equal in magnitude but opposite in direction.
An example of Newton's third law of motion is a person jumping off a diving board. When the person pushes down on the diving board, the board exerts an equal and opposite force upwards, propelling the person into the air. Another example is a rocket lifting off from a launchpad. As the rocket expels gas downwards, the gas exerts an equal and opposite force upwards, lifting the rocket off the ground.
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10 янв 2023
