Q72. A body executes simple harmonic motion about the origin with amplitude A = 13 cm and period T = 12 sec. At time t = 0 it is at x = 13 cm. The shortest time of passage from x= 6.5 cm to x = -6.5 cm is (a) 4 sec (b) 3 sec (c) 2 sec (d) 1 sec
equation of simple harmonic can be Asinwt or Acoswt but according to the given conditions in the question, u have to take Acoswt .. solution may help u . for any doubt please ask.
here is the solution , ans is 2 sec , here I have used the cosine form , one can also use the sine form but an extra π/2 have to carry in calculation . wo better choose the one whe...