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1) A 0.8 kg block is attached to horizontal spring. The system is set into motion by pushing the block 12.0 cm to the left of the equilibrium position and then released. The resulting frequency of oscillation is 2.5 Hz. Determine

a) The angular frequency

b) The spring constant

c) Expressions for the displacement, velocity and acceleration as function of time

d) Displacement, velocity, acceleration, kinetic energy, elastic potential energy, and restoring force at t = 1.48 s

2) A simple pendulum is 0.8 m long. Determine

a) The frequency of oscillation

b) The total time for 10 oscillations

c) The maximum initial displacement for the system to undergo simple harmonic motion