Question

you find your mass to be 42 kg on a weighing machine. Is your mass more or less than 42 kg? Please explain properly with steps.

Answer 1

Your mass will be less than 42 kg.

This is because the weight in weighing machine also counts the force that is exerted on us from the gravitational pull of earth. That force combines with our body's mass to give 42 kg.

Answer 2

≡QUESTION≡

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

                                                           

SOMETHING YOU SHOULD KNOW FIRST

• A weighing machine measures the weight of a body

• When we stand on a weighing machine, our weight acts downwards while upthrust due to air acts upwards.

So, due to upthrust , the body appears to loose some weight.

As a result, our apparent weight becomes less than the true weight.

║⊕ANSWER⊕║

• The weighing machine measures this apparent weight and hence the mass indicated by it is less than the actual mass.

• Our actual mass will be more than 42 kg.