Question

If the spring constant is doubled, what value does the period have for a mass on a spring?

Answer 1

The period T = 2 pi square root ( k / m )
If the spring constant k is doubled then T increases by a factor of square root 2 so it becomes (square root 2) * T

Answer 2

if spring constant is doubled, the mass on spring will be doubled as well. according to this formula, F=ke

k stands for spring constant and e stands for the length extended