GK
PHYSICS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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A force that acts at 90
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A force between an object and the surface it rests on
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A force caused by objects falling due to gravity
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A force caused by the movement of particles
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Detailed explanation-1: -Normal contact forces An object at rest on a surface exerts a force on the surface. The reaction force acts at right angles to the surface and is known as the normal contact force. For example, a book on a table.
Detailed explanation-2: -Contact force is a force that is applied by objects in contact with each other. The contact force acts on a point of direct contact between the two objects. This force can either be continuous as a continuous force or can be momentary in the form of an impulse.
Detailed explanation-3: -The normal force is defined as the force that a surface employs on any other body. If that body is at rest, it means that the net force acting on the body is equal to zero. This means that the downward force, that is, the weight, must be similar to the upward force, which is the normal force.
Detailed explanation-4: -Force applied by direct touching an object is called contact force. Like me pushing a wall i.e. muscular force or frictional force etc.