What is free nitrogen

Orque can be calculated by multiplying the force (n) applied at 90? to the lever arm at a distance (m) from the pivot point (point of rotation), the compound si unit for the torque is n? m. if the force (at 90? to the lever arm) applied is 15 n and it is applied at 2.0 m from the pivot point (point of rotation), what is the torque on the lever?

The free body diagram shows a box being pulled to the left up a 25-degree incline. the magnitude of the normal force is

How do we measure or think of speed in the united states?