An elastic bar is fixed at the upper end and loaded at the lower end by a falling weight. The shock load produced can be reduced by

A. Co-axial B. Perpendicular C. Parallel D. None of these

A. Directly as load B. Inversely as square of load C. Inversely as cube of load D. Inversely as fourth power of load

A. Zero at the centroidal axis B. Zero at the point other than centroidal axis C. Maximum at the neutral axis D. None of these

A. Margin B. Pitch C. Back pitch D. Diagonal pitch