A small body of a mass M is attached to an oscillating string.
What forces act on the body, and how do they depend on the vertical position of the body?
Two forces act on a body suspended to an oscillating string: the force of gravity Mg and the force of tension of a string N. The net force F acts to return the body to a point of equilibrium.
The net "returning" force F is directly proportional to the displacement Y from the point of equilibrium:
F = -k * X
Initial Values of Parameters
Length of the rope (L) 50 m
Gravitational constant (g) 10 m/sec2