Question

. Which of the following are contact forces?

I. Friction II. Gravitational force III Magnetic force IV Muscular force

a) I & II b) II & III c) I & IV d) II & IV

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Answer 1

Answer:

Muscular force is a contact force since there is contact between the surfaces.

Answer 2

Explanation:

The correct answer is :

|) Friction and ||) gravitational force

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