Question

The equation of motion of a particle is $x=acos(\alpha t{)}^2$. The motion is

• A. periodic but not oscillatory
• B. periodic and oscillatory
• C. oscillatory but not periodic
• D. neither periodic nor oscillatory.

Answer 1

Answer: (C)

oscillatory but not periodic

The motion is oscillatory but not periodic because the oscillations are followed from the maximum displacement (negative extreme) at t=0, the corresponding echo is equal to π/2