Question

assertion :non conservative forces like friction is acting on a particle the mechanical energy is no more constant
reason: frictional force is responsible for the production of heat energy
A) both are correct and a is correct explanation of r
B) both are correct but a is not correct explanation of r
C ais correct r is incorrect
D) I a is incorrect r is correct

Answer 1

Answer:

bro. i think answer is A. because friction is a non conservative force and as we know we can not apply conservation of mass energy concept also. reason being non conservative forces looses some amount of energy while doing work it can be in any form like friction which looses its energy in form of heat..