Simple Machines
What is a simple machines?
A simple machine are any of the basic mechanical devices for applying a force, such as an inclined plane, wedge, or lever.
What is the first law of motion?
The first law of motion states that an object at rest remains at rest and an object in motion remains in motion with the same velocity unless acted upon by what we call an unbalanced force.
what is the newtons second law law of motion?
newtons second law states that acceleration of a particle is dependent on the forces acting upon the particle and the particle's mass.
what is newtons 3rd law of motion?
newtons 3rd third law states that for every action in nature there is an equal and opposite reaction.
why dont all forces cancel out?
Newton's third law of motion states that every action has an equal and opposite reaction. This means that forces always act in pairs. Action and reaction forces are equal and opposite, but they are not balanced forces because they act on different objects so they don't cancel out.
What is a lever?
A lever is a simple machine consisting of a beam or rigid rod pivoted at a fixed hinge, or fulcrum.
What are the applications of Newton's first law?
The focus of Lesson 1 is Newton's first law of motion - sometimes referred to as the law of inertia.
how ans when did newton discover his second law?
Newton developed his laws of motion in 1666, when he was only 23 years old. In 1687, he presented the laws in his seminal work "Principia Mathematica Philosophiae Naturalis,” in which he explained how outside forces affect the movement of objects.
what is newtons 3rd law formula?
if one object A exerts a force FA on a second object B, then B simultaneously exerts a force FB on A, and the two forces are equal in magnitude and opposite in direction: FA = −FB.
when was newton born?
newton was born on january 4, 1643
What is a wedge?
A wedge is a piece of wood, metal, or some other material having one thick end and tapering to a thin edge, that is driven between two objects or parts of an object to secure or separate them.
What is Newtons 1st law equation?
Newton's first law says that if the net force on an object is zero ( Σ F = 0 \Sigma F=0 ΣF=0), then that object will have zero acceleration.
what are the applications of newtons second law?
The second law states that the acceleration of an object is dependent upon two variables - the net force acting upon the object and the mass of the object".
when and to whom did newton present his laws
Sir Isaac Newton first presented his three laws of motion in the "Principia Mathematica Philosophiae Naturalis" in 1686.
when did newton die?
What is a pulley?
A pulley is a wheel on an axle or shaft that is designed to support movement and change of direction of a taut cable or belt, or transfer of power between the shaft and cable or belt.
What is the formula of Newtons 1st law of motion?
There is no mathematical formula given for the newton's first law
why is newtons second law of motion important?
Newton's Second Law of Motion is very important because it shows the relationship between forces and motion.
why is newtons 3rd law of motion important?
whenever objects A and B interact with each other, they exert forces upon each other. ... These two forces are called action and reaction forces and are the subject of Newton's third law of motion.
why did newton invent the 3 laws of motion?
Newton worked in many areas of mathematics and physics. He developed the theories of gravitation in 1666, when he was only 23 years old. Some twenty years later, in 1686, he presented his three laws of motion in the "Principia Mathematica Philosophiae Naturalis."
A screw is a type of fastener, in some ways similar to a bolt, typically made of metal, and characterized by a helical ridge, known as a male thread.
What is the formula of inertia?
The Inertia of a point mass m at a distance 'r' is given by the formula I = (mr2)
what is newtons 2nd law of motion formula?
newtons 2nd law of motion formula is f=ma
why do things move if newtons 3rd law is true?
According to Newton's third law of motion, that mass also applies an equal force on you in the opposite direction, on you. When you try to move an object, the reaction force from the object is on you, not on itself.
what inspired newton?
Gravity - Newton is probably most famous for discovering gravity. Outlined in the Principia, his theory about gravity helped to explain the movements of the planets and the Sun. This theory is known today as Newton's law of universal gravitation. ... Reflecting Telescope - In 1668 Newton invented the reflecting telescope.