Which term is imposed at a right angle to a supporting member, creating a twisting force?

Which term is imposed at a right angle to a supporting member, creating a twisting force?

• A. Impact Load
• B. Lateral Impact Load
• C. Torsional Load
• D. Concentrated Load

Answer: (C)

A twisting force is a torsional load. When a force is applied at a right angle to a member in a way that tends to rotate it around its length, the member experiences a torque about its longitudinal axis. This twisting moment is what we call a torsional load. It differs from other loads: an impact load is a sudden dynamic impact, typically not specifically causing rotation about the axis; a lateral impact load is a side hit that mainly induces bending and lateral stresses; and a concentrated load is a single force that produces bending and shear along the member rather than twisting about its axis.

A twisting force is a torsional load. When a force is applied at a right angle to a member in a way that tends to rotate it around its length, the member experiences a torque about its longitudinal axis. This twisting moment is what we call a torsional load. It differs from other loads: an impact load is a sudden dynamic impact, typically not specifically causing rotation about the axis; a lateral impact load is a side hit that mainly induces bending and lateral stresses; and a concentrated load is a single force that produces bending and shear along the member rather than twisting about its axis.