Final answer:
The actual weight of a man with mass 50 kg is 490 N, calculated using the formula w = mg, with g being the acceleration due to gravity. Since the question details an elevator accelerating upwards, the scale shows a higher force of 600 N due to the additional force required for the upward acceleration.
Step-by-step explanation:
The question is asking about the actual weight of a man in an elevator when the scale reads 600 N while the elevator is accelerating upwards. The weight of an object is the force due to gravity, which is calculated using the formula w = mg, where m is the mass and g is the acceleration due to gravity (9.80 m/s² on Earth). Therefore, the actual weight of a man with a mass of 50 kg is:
w = mg = (50 kg)(9.80 m/s²) = 490 N.
Hence, the correct answer to this question is A. 490 N, which represents the man's actual weight when he is not accelerating.