A weight lifter weighing 100 Kg cannot float in the air despite being able to lift 120 Kg due to the principles of physics, specifically Newton's Third Law of Motion. This law states that for every action, there is an equal and opposite reaction. When a weight lifter attempts to lift a weight, he exerts a force downward on the ground, which in turn provides the necessary reaction force. Without a solid surface to push against, the lifter cannot generate the force required to lift himself off the ground.
PREREQUISITESStudents of physics, fitness enthusiasts, and anyone interested in understanding the mechanics of weight lifting and motion.