You find your mass to be 42 kg on a weighing machine. Is your mass more or less than 42 kg
Dear Student
A weighing machine is a kind of spring balance which measure the weight (and not the mass) of a body. When we stand on the weighing machine, our weight acts vertically downwards due to gravitational attraction of the earth. But the buoyancy due to air on our body acts vertically upwards. As a result of this, our apparent weight is less than the true weight.
Since the weighing machine measures the apparent weight, our true weight is more, i.e., more than 42 kg.
Regards
A weighing machine is a kind of spring balance which measure the weight (and not the mass) of a body. When we stand on the weighing machine, our weight acts vertically downwards due to gravitational attraction of the earth. But the buoyancy due to air on our body acts vertically upwards. As a result of this, our apparent weight is less than the true weight.
Since the weighing machine measures the apparent weight, our true weight is more, i.e., more than 42 kg.
Regards