Here is a spring mounted vertically. Also, there is a hanger for some masses on the end. Now suppose I measure the location of the bottom of the mass holder. Then I place a 250 gram mass in the holder ...

I blame Destin and his interesting sling shot video. Watch it. In this video, he claims that rubber bands do not act like springs. By "acting like springs" of course he means Hooke's law. This ...