We first make equilibrium equations of the body by considering all the three dimensional forces and then the free body diagram is made and then equations are made to be applied so as to calculate the centre of mass.
(a) The first part of the statement is false and other part is true
(b) The first part of the statement is false and other part is false too
(c) The first part of the statement is true and other part is false
(d) The first part of the statement is true and other part is true too
The question was asked in quiz.
The question is from Centre of Mass in section Centre of Gravity and Centroid of Engineering Mechanics