Q. Internal forces in a system of particles

कणों की एक प्रणाली में आंतरिक बल

A
Affect CM motion
सीएम की कार्रवाई को प्रभावित करें
B
Don’t affect CM motion
सीएम की कार्रवाई को प्रभावित न करें
C
Change mass
द्रव्यमान बदलें
D
Increase energy
ऊर्जा बढ़ाएँ

Explanation

Internal forces (forces between particles in the system) always come in equal and opposite pairs (Newton’s third law), so they cancel out and do not affect the motion of the center of mass. Only external forces can change the velocity or trajectory of the CM.

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