Changing the spring constant also changes the period, if k 2 k 1 then T 2 T 1 For simple harmonic motion the period is independent of amplitude, i.e. extension does not affect the period of oscillation, hence stretching the spring more to start with makes no difference to period.
Manila is located on the northwestern coast of the Philippines. Its population of 1.6 million is divided between a booming business district in Makati City and destitute communities on the fringes. In the poorest regions, multiple families live in close quarters in makeshift communities.
Manila was also the seat of power for most of the country's colonial rulers. It is the home to many historic sites, some of which were built during the 16th century. In 2016, the Globalization and World Cities Research Network listed Manila as an alpha- global city.