A simple pendulum is 4.00 m long.
(a) What is the period of simple harmonic motion for this pendulum if it is hanging in an elevator accelerating upward at 7.00m/s2?
(b) What is its period if the elevator is accelerating downward at7.00 m/s2?
(c) What is the period of simple harmonic motion for the pendulum if it is placed in a truck that is accelerating horizontally at7.00 m/s2?