SHMHard
Question
The total mechanical energy of a particle of mass m executing SHM is E = 1/2mω2A2. If the particle is replaced by another particle of mass m/2 while the amplitude A remains same. New mechanical energy will be :
Options
A.√2 E
B.2E
C.E/2
D.E
Solution
E = 
m ω2A2
=
m × 
× A2
=
kA2
E is independent of mass
m ω2A2=
m × × A2=
kA2E is independent of mass
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