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Physics 20 Unit D Assessment Assignment - Version D Remember to use GRASP and show all of your work for every question! To earn full marks you need to: Write what is given and required . . Write the needed formulas and rearrange if necessary Substitute into the formulas and include units State your answer with correct sig digs Module 7: Developing Level (6 marks) 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 5.00 Time (s) 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. (3 marks) Name: /20 marks Module 7: Proficient Level (2 marks) 2) A vertical spring is stretched 60.0 cm by a hanging 5.00 kg mass. a) What is the spring constant? b) What will be the frequency of vibration of this spring system