7-) The hydraulic cylinder
AB
exerts a force
F
of constant magnitude 2.5 kN directed from
A
to
B
as the engine is elevated. Determine the moment of
F
about the point
C
as a function of
\theta
for the range
0<=\theta <=90\deg
. What is the weight
w
of the engine if the combined moment about
C
of the force
F
and weight
W
for
\theta
=30\deg
is equal to zero?