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.
When an unbalanced force is applied to an object, the object will accelerate. The size of the acceleration depends upon the force applied and the mass of the object. There is a relationship between force, mass and acceleration (force = mass Ã acceleration). Gravity is a force that attracts objects with mass towards each other. The weight of an object is the force on it due to gravity. There is a relationship between weight, mass and acceleration of free-fall (weight = mass Ã acceleration of free-fall). The gravitational field strength of the Earth is 10 N/kg and its acceleration of free-fall is 10 m/s 2.