UPSC CSE Prelims 2001 Q110 — Science & Technology PYQ with Answer

Consider the following statements: A simple pendulum is set into oscillation. Then

I. The acceleration is zero when the bob passes through the mean position.

II. In each cycle the bob attains a given velocity twice.

III. Both acceleration and velocity of the bob are zero when it reaches its extreme position during its oscillation.

IV. The amplitude of oscillation of the simple pendulum decreases with time.

Which of these statements are correct?