a) A semi-cylinder of negligible mass is placed on a smooth horizontal surface and
supported by a cable of length l mass m to be attached to point B of the semi-cylinder, calculate an expression for
angle e with the horizontal made by the diameter AB.
77
b) Calculate e for the case where the cable is
replaced by a linear spring of constant k
and neutral length 1.
g.
B В
C) Increase k toward infinity and compare the
two above-obtained expressions.
C с