The equation of motion of a particle is x = a cos (α t )2. The motion is
Now differentiating the above twice we get,
Thus, we find that 
is proportional to 
and hence it is an oscillatory.
Thus, the motion is not periodic.
Hence the option (c).
1
The equation of motion of a particle is x = a cos (α t )2. The motion is
Now differentiating the above twice we get,
Thus, we find that is proportional to and hence it is an oscillatory.
Thus, the motion is not periodic.
Hence the option (c).