Question

The human goalie makes a save, barely. She passes to a player who sets up a slapshot. During the shot, the 700 g stick is raised high, then slaps the ice near the puck in such a way that the stick bends and stores energy like a spring, so as to transfer even more energy to the puck. The stick starts at a height of 2.00 m. The player then brings the stick down with a constant force over that distance. Just before the puck is hit, the stick has a velocity of 12.6 m/s and is bent. All of that energy transfers into the puck (assume there is no follow-through), which travels at a velocity of 100 mph.

(a) With what force did the player swing the stick?

(b) What is the spring constant of the stick if it bends 5 cm?

Answer 1