Question

An object of mass m = 8.0 kg is attached to a massless spring described by Hooke's law and allowed to hang in Earth's gravitational field. The spring stretches 2.2 cm as the object reaches its equilibrium position. If it were now allowed to oscillate on this spring, what would be its frequency?

3.4 Hz

1.6 Hz

0.28 × 10-3 Hz

0.52 Hz

not b **

Answer #1

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Chapter 15, Problem 037
A massless spring hangs from the ceiling with a small object
attached to its lower end. The object is initially held at rest in
a position yi such that the spring is at its
rest length. The object is then released from
yi and oscillates up and down, with its lowest
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(b) What is the speed of the object when it is...

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x = (0.25 m) cos ( 0.4 π t ).
Find:
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d) Speed of the object at t = .30 sec.
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