JEE Main Physics question

Physics Laws of Motion JEE Main

A student unable to answer a question on Newton's laws of motion attempts to pull himself up by tugging on his hair. He will not succeed because [Guj CET 2006]

(A)The force exerted is small
(B)The frictional force while gripping is small
(C)Newton's law of inertia is not applicable to living beings
(D)The force applied is internal to the systemCorrect

Answer: (D)

Solution

Pulling on one's own hair is an internal force (an action–reaction pair entirely within

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Question ID VK-152856