How to calculate Normal force |Normal force|Normal force physics |Mechanics | A level physics

This video is about normal force. This video also explains how to increase and decrease normal reaction force. There are 5 different situations has been discussed in the video to calculate normal force.
In physics, various kinds of forces exist. One of them is the normal force. The normal force is defined as the force that any surface exerts on any other object. If that object is at rest, then the net force acting on the object is equal to zero. It is a fact that the downward force i.e. weight must be equal to the upward force i.e. the normal force.
Work is equal to force multiplied by distance: W = F × d. Because force is a component of work and an impact is the conversion of energy into work, you can use the equations for energy and work to solve for the force of an impact.
Normal force is defined as the force that a surface exerts on an object. If the object is at rest, net force on the object is equal to zero; therefore, the downward force (weight) must be equal to the upward force (normal force). Since weight acts in the downward direction it will be negative.
The weight of an object equals the mass of the object multiplied by the acceleration of gravity. Multiply the two values together. In order to find the normal force, you need to multiply the weight of the object by the cosine of the angle of incline. Contrast to the gravitational force (whose force starts at the center of the object)—the normal force begins at the surface. The normal force arises from the electromagnetic force;
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