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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?
The earth's rotation about its axis changes measurably over time; You don't have to worry about the details; all you need to know is that our days are growing longer by about 2.3 m
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