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.
Yes but only just. Gravity is a relationship between the mass of a planet and the distance from the centre. In simplistic terms G = M /R Where G = gravity, M = mass and R = radius. It's a bit more complicated than that-but is a good approximation. For example Saturn is about 9 times larger than the Earth but the gravity is only just above that of the Earth.