A 40 kg child is sitting on a swing. The swing is attached to a
tree branch by a single 2.40m long rope.
A. Find the tension, in [N], in the rope when the child is
at rest.
B. Imagine that the swing can go around in a vertical circle,
with a velocity of 6 m/s at the top of its motion.
Find the tension in the rope at this point.