plz answer my qsn related to gravitation?

Question

u find ur mass to be 42kg on a weighing machine. is ur mass more or less than 42 kg.

Answer 1

When you stand on a weighing machine, you exert a force on the machine. The force is equal to your mass, m multiplied by the acceleration due to gravity, g. But the machine is adjusted in such a way that it gives your mass, divididing it by g.

So the wiehing machine gives you your mass. The force you exert i.e. your weight is 9.8 times your mass, when expressed in Newton and it is equal to the mass if expressed in the kg f (kilogram force).

Answer 2

ur mass is 42 kg.

While the word "weigh" or "weight" is often used, any balance scale measures mass, which is independent of the force of gravity. The moments of force on either side balance, and the acceleration of gravity on each side cancels out, so a change in the strength of the local gravitational field will not change the measured weight.

Answer 3

look its nowhere mentioned that whether the weighing machine is in air or vacuum ,on earth or moon.if its in vacuum and on earth then ur mass is 42kg.if its in air and on earth then ur mass is more than 42 kg.this is based on the principle that weight reduces wid upthrust .since the weight is measured wrong by the weighing machine in air so it will give the incorrect mass.but if its in vacuum then the accurate mass will be shown.as the weighing machine acts on the principle of gravitation where F=mg where F is the force , m is the mass and g is the acceleration due 2 gravity.so m=F/g.it will measure the correct weight then it will give the correct mass in vacuum as there is no air and its upthrust but it measures the weight itself incorrect in air as there is a reduction in weight due to upthrust of air.so it will give the incorrect mass.

Answer 4

u should ask if mass = 42kg then weight will be more or less than mass in value

if i am going right then
mass= 42kg
weight= mass x gravity
= 42 x 9.8 = 411.6 N (weight is a kind of force)

Answer 5

When a person says that his weight is xxxxx kg, he means his mass.

So if your mass on a weighing machine( which measures your mass without making an error) is 42 kg, yout weight is approximately 420 newton( or 42 kgf).

Answer 6

If your 'weighing machine' is a balance, then your mass is 42kg.

If your 'weighing machine' is a spring scale and it reads 42kg, and you are weighing on:

earth, your mass is very close to 42kg
moon, your mass is much higher than 42kg
Jupiter, your mass is much lowe than 42kg