A slider is oscillating in SHM on a frictionless track with an amplitude A. You slow  it so that its amplitude becomes half. Then the total mechanical energy in terms of  previous value is

Initial total energy  =12mω2A2; ----(1)new amplitude is half of initial amplitudefinal total energy  =12mω2A22.----(2)comparing equations (1) and (2)\ Total mechanical energy becomes 14 th Initial total energy