A rifle fires a 2.10×102-kg pellet straight upward because the pellet rests on a compressed spring that is released when the trigger is pulled. The spring has a negligible mass and is compressed by 9.10×102 m from its unstrained length. The pellet rises to a height of 6.10 m above its position on the compressed spring. Ignoring air resistance, determine the spring constant. Related Homework: Problem 38 |