What is the name of the opposite and equal contact force between a surface and an object standing on it?

Question

What is the name of the opposite and equal contact force between a surface and an object standing on it??  
A. gravity force  
B. friction force  
C. centripetal force  
D. normal force

Accepted Answer

Correct Answer: (D)normal force. 
Rationale: The force that supports an object against gravity, acting perpendicular to the surface, is called the normal force.A) Gravity force:Gravity is a non-contact force that attracts objects toward the center of the Earth or any other massive body. It is always directed downward, pulling objects toward the ground. While gravity acts on the object, it is not the equal and opposite force in response to the object's weight on a surface. The force that supports the object against gravity is the normal force.B) Friction force:Friction is the resistance that occurs when two surfaces slide against each other. It acts parallel to the surface, opposing the relative motion of objects. While friction is related to the motion of the object, it is not the force that balances the object's weight when standing on a surface. The friction force does not act directly opposite to the object's weight.C) Centripetal force:Centripetal force is the force that keeps an object moving in a circular path. It acts toward the center of the circle and is not related to the balance of forces when an object is at rest on a flat surface. This force is only relevant in circular motion, not when standing on a surface.D) Normal force:Normal force is the force exerted by a surface to support the weight of an object resting on it. It acts perpendicular (normal) to the surface and balances the object's weight. The normal force is the equal and opposite contact force that supports the object against gravity. For an object standing still on a flat surface, the normal force exactly cancels out the gravitational force acting on the object.Conclusion: The normal force is the opposite and equal contact force between a surface and an object standing on it, making D) Normal force the correct answer.

What is the name of the opposite and equal contact force between a surface and an object standing on it?

A
gravity force

B
friction force

C
centripetal force

D
normal force

The force that supports an object against gravity, acting perpendicular to the surface, is called the normal force.

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What is the name of the opposite and equal contact force between a surface and an object standing on it?

A gravity force B friction force C centripetal force D normal force

The force that supports an object against gravity, acting perpendicular to the surface, is called the normal force.

Topic Flashcards

Mini Quiz

Related Questions

A
gravity force

B
friction force

C
centripetal force

D
normal force