The equation of motion of a particle started at t=0, is given by y = 5 sin(20 t + pi/3) cm. The least time after which acceleration becomes zero is:

The equation of motion of a particle started at t=0, is given by y = 5

1.	The equation of motion of a particle started at t=0, is given by y = 5 sin(20 t + pi/3) cm. The least time after which acceleration becomes zero is:
Answer» `pi/90` SEC `pi/120` sec `pi/60` sec `pi/30` sec ` ANSWER :D