26. the kinetic energy t and the potential energy v ofa spring-mass system executing a simple harmonic motion vary with time. at an instant of time, at which th

26. The kinetic energy T and the potential energy V ofa spring-mass system executing a simple harmonic motion vary with time. At an instant of time, at which the product TV assumes its maximum value, let the displacement be a fraction fof the amplitude of oscillation. The absolute value offis: (a) 1/V3 (b) 1/2 (c) 1/3 (d) 1/2