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The x-t graph of a block of mass m = 0.5 kg undergoing simple harmonic motion is shown right. Determine the frequency f and angular frequency ω. Write the position function x(t). During which times is the block at rest? Calculate the spring constant k. What is the acceleration of the particle at 𝑡=4/3 𝑠? What is the acceleration of the particle at t = 6 s? What is the block’s kinetic energy KE at t = 9.5 s?