Unit 3E: Magnets & springs: Compressing & stretch
Overall rating 4 out of 54 (1 rating)
Last updated 14 January 2012, created 06 April 2011, viewed 1,959
Lesson 7: Children should learn that when a spring is stretched or compressed upward, it exerts a downward force on whatever is compressing or stretching it, and that when an elastic band is stretched downward, it exerts an upward force on whatever is stretching it.