A particle is in linear simple harmonic motion between two points A and B, 10 cm apart (Fig. 14.6). Take the direction from A to B as the + ve direction and choose the correct statements.

(a) The sign of velocity, acceleration and force on the particle when it is 3 cm away from A going towards B are positive.

(b) The sign of velocity of the particle at C going towards O is negative.

(c) The sign of velocity, acceleration and force on the particle when it is 4 cm away from B going towards A are negative.

(d) The sign of acceleration and force on the particle when it is at point B is negative.