A spring with spring constant k = 80kg/s2 is suspended as shown. In order to str

Question

A spring with spring constant k = 80kg/s2 is suspended as shown. In order to stretch the spring by 4 centimeters, what mass is required? Explain how you determined your answer. 4-8 4. A mass m, is suspended from a spring with spring constant k. The mass is Spring stretch pulled down a distance of 5 centimeters from its equilibrium position and then released, so that it exhibits simple harmonic motion. The period of oscillation is 4 seconds. Suppose a second experiment has an identical spring, a mass 2m,(i.e. twice the mass) and it is pulled down a distance of 12 centimeters from its equilibrium position and released. What is the period of oscillation for this experiment? Explain how you determined your answer. i. A third experiment has a mass 2m, and a spring constant 2k, If this mass is pulled down 5 centimeters and released, what is period of oscillation? Explain your reasoning ii. 5. For the graph shown in question I, give a time when , nonzero velocitv but zero position.

Explanation / Answer

3] Correct solution of Q3

Net force in vertical will be zero on given mass,

mg - kx = 0

m = kx/g

= 80*0.04/9.8

= 0.3265 kg answer

We determined answer by writing force equation as the mass will have net force zero at the given extension.

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