A force of 320 kN acts at a perpendicular distance of 4 m from a point. What will be the turning moment produced?

To determine the turning moment, also known as torque, the formula used is:

Turning Moment (Torque) = Force × Distance

In this case, a force of 320 kN is applied at a perpendicular distance of 4 m from a point. By substituting the values into the formula, you calculate:

Turning Moment = 320 kN × 4 m = 1,280 kNm

This calculation shows that the torque produced by the force acting at that distance is indeed 1,280 kNm. This unit of measurement (kNm) is standard for expressing torque in engineering contexts, highlighting that the turning moment is a product of both the force applied and the distance from the pivot point to where the force is applied.

The other choices do not represent the turning moment accurately; for example, kN is a unit of force, which does not apply directly here, while kJ is a unit of energy. The correct answer reflects the application of the given force over the specified distance specifically in terms of torque.