Physics-Centre of Mass
NEET Physics Centre of Mass Assertion Reason Question
Type: Assertion Reason-assertion-Medium-Class 11
Assertion (A): The center of mass of a system of particles does not change if the net external force acting on the system is zero. | Reason (R): The work done by internal forces within the system is always zero.
A
Both A and R are true, and R is the correct explanation of A.
B
Both A and R are true, but R is not the correct explanation of A.
C
A is true but R is false.
D
A is false but R is true.
Correct Answer
Option C
Detailed Explanation
The assertion is true because the center of mass remains constant in the absence of external forces. The reason is false because internal forces can do work, but they do not affect the center of mass motion.
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