Question: A block attached to a spring with unknown spring constant oscillates with a period of 2.0 s. What is the period if a. The mass

A block attached to a spring with unknown spring constant oscillates with a period of 2.0 s. What is the period if
a. The mass is doubled?
b. The mass is halved?
c. The amplitude is doubled?
d. The spring constant is doubled?
Parts a to d are independent questions, each referring to the initial situation.

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