A spring-loaded dart gun is used to shoot a 5-gram dart straight upward. Its spring has a stiffness 50 N/m, and its relaxed length is 5.0 cm. The spring is compressed 4.0 cm from its relaxed length.
- What is the net force on the dart at the instant the spring is released?
- What is the net force on the dart at the instant the dart leaves the spring? At this instant, the spring has returned to its relaxed length.