A mass is suspended by a spring such that it hangs at rest 0.5 m above the ground. The mass is raised 40 cm and released at time t=0 s, causing it to oscillate sinusoidally. If the mass returns to the high position every 1.2 s, determine the height of the mass above the ground at t= 0.7 s. Draw a sketch. b↑ 1.2 -0.8 0.4 0 -0.4 0.2 0.4 0.6 0.8 1.0 1

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