Forces What is Force a force is any

Forces

What is Force? -a force is any influence that causes an object to undergo a change in speed, a change in direction, or a change in shape. -Force can also be described by intuitive concepts such as a push or pull. -Force is the capacity to do work or cause physical change.

Force= Mass multiplied to acceleration (F = ma)

CONTACT FORCE -is a force that acts at the point of contact between two objects, in contrast to body forces.

Frictional Force -It refers to the result of the surface of one object coming into contact with the surface of another object.

Tension force -is the force which is transmitted through a string, rope, cable or wire when it is pulled tight by forces acting from opposite ends. The tension force is directed along the length of the wire and pulls equally on the objects on the opposite ends of the wire.

Normal force is the force of a surface acting on an object( the normal force is perpendicular to the plane of contact). This force is directly related to the force of gravity, as the third law of newton state that when a force is applied to an object it will react with an equal force in the opposite direction

Air Resistance In fluid dynamics, drag (sometimes called air resistance or fluid resistance) refers to forces which act in a solid object in the direction of the relative fluid flow velocity.

Applied Force -an applied force is a force which is applied to an object by a person or another object. If a person is pushing a desk across the room, then there is an applied force acting upon the object. The applied force is the force exerted on the desk by the person.

Spring Force The spring force is the force exerted by a compressed or stretched spring upon any object which is attached to it. An object which compresses or stretches a spring is always acted upon by a force which restores the object to its rest or equilibrium position. For most springs, the magnitude of the force is directly proportional to the amount of stretch or compression of the spring.

Action-at-a-distance Force In physics, action at a distance is the interaction of two objects which are separated in space with no known mediator of the interaction.

Gravitational Force -the amount of pull on anything that keeps that object on the earth -the amount of gravity on the object that keeps it moving -Newton's law of universal gravitation states that every point mass in the universe attracts every other point mass with a force that is directly proportional to the product of their masses and inversely proportional to the square of the distance between them.

Magnetic force -attraction or repulsion that arises between electrically charged particles because of their motion; the basic force responsible for the action of electric motors and the attraction of magnets for iron. Electric forces exist among stationary electric charges; both electric and magnetic forces exist among moving electric charges. The magnetic force between two moving charges may be described as the effect exerted upon either charge by a magnetic field created by the other.

Electrical Force -It is the force that pulls the tiny electrons of an atom into their orbits, and thus prevents atoms from blowing up as the electrons remain in their orbits due to the help of electrical force which comes from the center of the orbit -Attractive or Repulsive interaction between two charged objects

- the electric force is like an invisible spring, but as the charges move farther apart, a weaker spring pulls them together.