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1. An auto CD rotates at 480 rpm (rev/min). What is the period and frequency of...

1. An auto CD rotates at 480 rpm (rev/min). What is the period and frequency of the CD?

2. In physics class, your teacher shows you a demonstration of a spring � mass system. A spring is connected to a cart on an air track. She moves the cart 0.15 m from its equilibrium position and lets go at t = 0. The cart completes 1 oscillation every 3.0 seconds. What is the position of the cart at 0.30 seconds? How about after 2.0 seconds?

3. A mass on a spring has a restoring force of 25 N. If the spring has been stretched 10 cm, what is the spring constant?

4. Describe how a position vs time graph of a mass-spring system will change if�

a. The spring constant is increased by a factor of 2

b. The force constant is increased by a factor of 2

c. Both the spring constant and restoring force are increased by a factor of 4

d. Amplitude is increased by a factor of 2.

5. A 2 kg mass attached to a spring at equilibrium is displaced 15 cm and released and allowed to oscillate. Determine the maximum velocity of the mass if the spring constant is 90 N/m.

Please show work!

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Answer #1

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