A 35-centimeter pendulum swings in front of a metric ruler. The bob (weight on the end of the pendulum) is released from a position of 44 centimeters. It swings to the 18-centimeter position before swinging back to 44 centimeters.

a. What is the equilibrium position along the ruler?

b. What is an approximation for the maximum angular displacement from equilibrium?

c. What is the period of the pendulum?

d. What is the equation of the horizontal displacement of the pendulum?
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