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Question

What force overcomes the gravitational force on an atomic level when we stand on a surface?

A
Electrostatic force
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B
Magnetic force
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C
Weak nuclear force
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D
Strong nuclear force
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Solution

The correct option is A Electrostatic force
When we stand on a surface, the gravitational force works in the downward direction. However, we do not fall down because the surface of earth applies a contact force in the upward direction. This contact force is called the normal force and is primarily caused because of electrostatic interactions between atoms.

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