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Grade Upto college levelMechanics

Can kinetic energy of system be increased without applying any external force on the system?If yes explain how come internal force do work?

Profile image of sudarshan gupta
16 Years agoGrade Upto college level
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Profile image of sateesh babu rayala
16 Years ago

YES

LET TWO POSITIVE CHARGED PARTICLES ARE MADE TO MOVE FROM REST UNDER THEIR REPULSION , SURELY THEY WILL GET K.E. SO THAT SYSTEM K.E. IS INCREASED. ANYWAY THE MOMENTUM OF THE SYSTEM REMAINS CONSTANT.