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Karnataka Board PUCPUC Science Class 11

Two Blocks of Unequal Masses Are Tied by a Spring. the Blocks Are Pulled Stretching the Spring Slightly and the System is Released on a Frictionless Horizontal - Physics

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Question

Two blocks of unequal masses are tied by a spring. The blocks are pulled stretching the spring slightly and the system is released on a frictionless horizontal platform. Are the forces due to the spring on the two blocks equal and opposite? If yes, is it an example of Newton's third law?

Short Note

Solution

Yes, the forces due to the spring on the two blocks are equal and opposite.
But it's not an example of Newton's third law because there are three objects (2 blocks + 1 spring). Spring force on one block and force by the same block on the spring is an action-reaction pair.

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Chapter 5: Newton's Laws of Motion - short answers [Page 77]

APPEARS IN

HC Verma Concepts of Physics Vol. 1 [English] Class 11 and 12
Chapter 5 Newton's Laws of Motion
short answers | Q 15 | Page 77
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