Question

You find your mass to be 42Kg on a weighing machine .Is your mass more or less than 42 Kg?

Answer 1

It should be weight..

If my mass on weighing machine is 42kg then my mass anywhere will also only be 42kg.

But if my weight on weighing machine is 42kg then, my actual weight is slightly higher than 42kg. This can be explained as Air is also a fluid and it is also exerting some buoyant force on us which is in opposite direction which results in slightly lowering our weight on measuring. The weighing machine only measures the difference in our actual weight and buoyant force. Our actual weight is higher than what is measured.

However it is very low, so it doesn't matter anyway.

Cheers!