Question: 1. A Pendulum with length 20 cm is held to one side and let go. It then oscillates, swinging from side to side. (a) What

1. A Pendulum with length 20 cm is held to one side and let go. It then oscillates, swinging from side to side.

(a) What is the angular frequencyof the oscillation?

(b) What is the periodTof the oscillation?

2. A 5kg mass is attached to a horizontal spring and allowed to oscillate back and forth along a frictionless surface. The period of the oscillation is measured to be 3s. What is the spring constant in Newtons per meter?

3. A water wave is moving towards the beach. The wave is described by the function 1.5m sin2x2twherexis the distance towards the beach andtis time.

5m 4s

(a) What is the amplitude of the waveA? (b) What is the wavelength?

(e) What is the wave's speedv? (f) What is the wavenumberk?

(g) What is the angular frequency?

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