A pendulum clock depends on the period of a pendulum to keep ...

[ahriuashd]

A pendulum clock depends on the period of a pendulum to keep correct time. Suppose a pendulum clock is keeping correct time and then Dennis the Menace slides the bob of the pendulum downward on the oscillating rod. The clock then runs
  1.slow.
  2.fast.
  3.correctly.

Question 2

A simple pendulum is suspended from the ceiling of a stationary elevator, and the period is measured. If the elevator accelerates upward, the period
  1.increases.
  2.decreases.
  3.remains the same.

[Sammyo]

Answer to Question 1

2

Answer to Question 2

2

[ahriuashd]

TYSM

[mohan]

Excellent