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Forces

Welcome to class!

In today’s class, we will be talking about forces. Enjoy the class!

Forces

Force can be defined as a physical phenomenon that is capable of causing, retarding, increasing and changing the direction of motion and can stop motion. It can be defined as a physical phenomenon that is capable of causing, increasing, retarding and changing the direction of motion and can stop motion.

is defined as a measure of the mechanical action exerted on a particle or body by other bodies or fields.  It is also defined as a measure of the mechanical action exerted on a particle or body by other bodies or fields. Force is measured in newton.

Mathematical expression

F=ma

F=m x a

Where; f is the force, m is the mass and a is the acceleration.

Types of force

There are two types of force namely;

1. Contact force
2. Non-contact forces.

Will be breaking it down into simplest form:

• Contact force:

This happens between two or more surface when the source of the force is in contact with the object it is acting upon. Contact forces are forces that act between two objects that are physically touching each other. For example, when people are pushing a car or table, your hand or body will make contact with the object. Other examples include; reaction force, frictional force, tension force, upthrust and pulls.

• Non-contact force:

Non-contact forces are forces that act between two objects that are not physically touching each other. Examples of non-contact forces include:

1. Magnetic force: A magnetic force is experienced by any magnetic material in a magnetic field. Opposite magnetic poles (N – S or S – N) attract each other
2. Electrostatic force: An electrostatic force is experienced by any charged particle in an electric field. Opposite charges (+ and -) attract.
3. Gravitational force: A gravitational force is experienced by any mass in a gravitational field. Masses are attracted towards each other by gravitational force.

In our next class, we will be talking about the Calculation of Gravitational Force.  We hope you enjoyed the class.

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