Is it possible to have an antinode where the cord meets the pulley? Give your answer as a CER. Hint: Claim: Your answer to the question, Evidence: Describe observations or data that support your answer, Reasoning: Explain how the evidence you picked supports your answer.

Suppose a force of 60 n is required to stretch and hold a spring 0.1 m from its equilibrium position. a. assuming the spring obeys hooke's law, find the spring constant k. b. how much work is required to compress the spring 0.5 m from its equilibrium position? c. how much work is required to stretch the spring 0.6 m from its equilibrium position? d. how much additional work is required to stretch the spring 0.1 m if it has already been stretched 0.1 m from its equilibrium? a. kequals 600