1) This is a graph of the horizontal displacement of a pendulum on Earth as a function of time. Displacement vs. Time for a Pendulum +1.0 m Displacement (m) 0 - 1.0 m 2.00 4.00 6.00 Time ($) a) On the graph, label the amplitude, equilibrium line, and a point where the restoring force is at a maximum. (1.5 marks) b) What is the period of the pendulum? (1.5 mark) c) Calculate the length of the pendulum on Earth