Question

which of the following is a contact force?

a.magnetic force
b.gravitional force
c.electrostatic force
d. frictional force​

Answer 1

Answer:

d number is the answer of this question

Answer 2

Answer:

Correct answer is (D)

Explanation:

Friction is a surface phenomenon. When two surfaces have irregularities that come in contact do they get interlocked preventing them against sliding against each other. So, frictional force is a contact force dependent on surface.

Here, option (D) is correct.

Gravitational force, electrostatic force and magnetic force does not depend on the surface.

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