(Solved):   2. BOW AND ARROW Consider the following simple model of a bow and arrow. An ideal elastic ...

 

2. BOW AND ARROW Consider the following simple model of a bow and arrow. An ideal elastic string has a spring constant k = 10 N·m and relaxed length L = 1 m which is attached to the ends of an inflexible fixed steel rod of the same length L as shown below. A small ball of mass m = 2 kg and the thread are pulled by its midpoint away from the rod until each individual part of the thread have the same length of the rod, as shown below. What is the speed of the ball in meters per seconds right after it stops accelerating? Assume the whole setup is carried out in zero gravity. L L m