Question

For an isolated system in the absence of any dissipative effect
(1) KE is conserved
(2) total energy is conserved
(3) PE is conserved
(4) mechanical energy is conserved

• A. 1, 2 and 3 are correct
• B. 1 and 2 are correct
• C. 2 and 4 are correct
• D. 1 and 3 are correct

Answer 1

Answer: (C)

For an isolated system in absence of any dissipative effect, both mechanical energy and total energy are conserved but not the $KE$ and $PE$.