Question

Define muscular force. Why does it call a contact force?

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Answer 1

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Muscular force is called contact force because muscles are in direct contact with the object on which force is applied while applying force.

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Answer 2

Explanation:

Since the muscular force can be applied to an object only when our body is in contact with the object therefore muscular force is contact force. When we lift a book from a table by applying muscular force, then our hands is in contact with the book.