A student attempts to pull himself up by tugg | vedclass

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Question

(D) According to Newton's third law,for every action,there is an equal and opposite reaction. When the student pulls his hair,he exerts a force on his

Vedclass · Accepted Answer

The force applied is internal to the system.

Vedclass · Answer

(D) According to Newton's third law,for every action,there is an equal and opposite reaction. When the student pulls his hair,he exerts a force on his hair,and his hair exerts an equal and opposite force on his hand. Since both the student and his hair are part of the same system,these forces are internal forces. Internal forces cannot change the state of motion of the center of mass of a system. Therefore,the student cannot lift himself up.

$A$ student attempts to pull himself up by tugging on his hair. He will not succeed because:

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