What is the MKS unit of work equivalent to?

The MKS unit of work is measured in joules. To understand this, consider that work is defined as the product of force and displacement in the direction of that force. In the MKS (Meter-Kilogram-Second) system, force is measured in newtons (N), which is equivalent to kg·m/s², and displacement is measured in meters (m). Therefore, when you calculate work by multiplying the force (in newtons) by the displacement (in meters), you get:

Work (in joules) = Force (in newtons) × Displacement (in meters)

Work (J) = N × m

Since 1 Joule is defined as 1 Newton meter (1 J = 1 N·m), it’s clear that in the MKS unit system, the unit of work is indeed the joule. This relationship underscores how work is quantitatively assessed in physics, making the joule the standard unit used in various applications across different fields of science and engineering.