Problem 4. (2.5 points) A crane system consists of a cab (body 1 ), and two crane arms (bodies 1 and 2) that can rotate about revolute joints as shown. It is known that
L_(1)=2m
, and
L_(2)=L_(3)=7
m . At a particular moment of time, it is known that
\psi =
120\deg ,\theta =60\deg
, and
\phi =45\deg
. At this moment, use rotational transformation matrices to calculate the components of the vector
vec(r)_((C)/(P))
in XYZ coordinates.
Ans: {r_((C)/(P))}_(0)=[[-3.38,5.86,1.81]]^(T)m