GK
PHYSICS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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A force that involves objects physically touching
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A force that involves objects being very close
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A force that involves objects that are not physically touching
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None of the above
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Detailed explanation-1: -A contact force is any force that occurs as a result of two objects making contact with each other. Contact forces are ubiquitous and are responsible for most visible interactions between macroscopic collections of matter.
Detailed explanation-2: -A contact force occurs when two objects are physically touching. Common examples of contact forces are: Friction. Air resistance.
Detailed explanation-3: -Friction is a type of contact force only. Applied Force: Force which is applied to an object by another object.
Detailed explanation-4: -Force of friction is a contact force, i.e., it always acts when the bodies are in contact. A force that can be exerted by an object on another one only through ‘physical touching’ is known as a contact force, such as muscular force and frictional force.
Detailed explanation-5: -Contact forces are those types of forces that result when the two interacting objects are perceived to be physically contacting each other. Examples of contact forces include frictional forces, tensional forces, normal forces, air resistance forces, and applied forces.