Arm and leg weakness can be caused by a variety of different conditions, some of them temporary and others chronic. Excessive exercise is one cause of temporary fatigue in the major muscle groups, although this is not considered true muscle weakness.
Mass is an intrinsic property of the body and gravity is the force exerted on any body by the things that surround it. Weight, on the other hâ¦and, depends on gravity. It is equal to the product of the mass of the body and the gravitational force acting on it.
mass is the amount of matter in an object weight is a measure of the gravitational force exerted on an object gravity is a force of attraction between objects that is due to their masses, which decreases as the distance between the objects increases.ravity is the attraction between two or more masses. so any object always has mass. if the object is near something like a planet gravity effects it. which gives a fore on it, called weight.