You\'ve attached a bungee cord to a wagon and are using it to pull your little s

Question

You've attached a bungee cord to a wagon and are using it to pull your little sister while you take her for a jaunt. The bungee's unstretched length is 1.3 m, and you happen to know that you little sister weighs 220 N and the wagon weighs 75N. Crossing a street you accelerate from rest to your normal walking speed of 1.5m/s in 2.0 s, and you notice that while you're accelerating, the bungee's length increases to about 2.0m. What's the force constant of the bungee cord, assuming it obey's hooks' law.

Explanation / Answer

You've attached a bungee cord to a wagon and are using it to pull your little s

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