Gravity gives weight to physical objects and causes them to fall toward the ground when dropped.
If Μ is a point mass or the mass of a sphere with
Rolling Resistance Coefficient
Rolling resistance, sometimes called rolling friction or rolling drag, is the force resisting the motion when a body (such as a ball, tire, or wheel) rolls
Wind loading - takeoff speed
In aerodynamics, wing loading is the total weight of an aircraft divided by the area of its wing. The stalling speed of an aircraft in straight, level
In science and engineering, the weight of an object is usually taken to be the force on the object due to gravity.
In Newtonian physics the weight is