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Questions  

Total mechanical energy of a system is 24 Joule. If minimum potential energy stored in the system is 6 Joule and dissipative forces are absent, then maximum kinetic energy that the system can possess is 

a
12 Joule
b
18 Joule
c
15 Joule
d
8 Joule

detailed solution

Correct option is B

Since dissipative forces are absent, KE+PE=E⇒KEmax+PEmin=E⇒KEmax=E−PEmin=24−6Joule=18 Joule

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