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  3. 4 a spring is hanging from the ceiling it is...

Question: 4 a spring is hanging from the ceiling it is...

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4. A spring is hanging from the ceiling. It is pulled down and released, and the it oscillates up and down. Its length, Icentimetres, is modelled by the function 1- 33 + 5cos (4nt), where t is time in seconds after release. (4 marks) a. Find the length of the spring after 1 second. (1 mark) b. Find the minimum length of the spring. (2 marks) c. What is the period of the motion? (1 mark)
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