In a Two-Dimensional or Planar Analysis a Segment or Object

Multiple Choice

In a two-dimensional or planar analysis a segment or object has three degrees of freedom, two translational degrees (horizontal and vertical) and one rotational degree (orthogonal to the translational plane) Thus how many equations of motion may be written for each segment in the kinetic chain?

A) 2
B) 4
C) 3
D) 6