- #1

tomtomtom1

- 160

- 8

- Homework Statement
- Help With Mass and Weight Units

- Relevant Equations
- Help With Mass and Weight Units

Hello all

I was hoping someone could clear up the units & difference between Mass and Weight.

I live in the UK.

I weighed myself today on the scale and the scale told me that I weighed 95kg.

What bothers me is that if:-

Mass - Is the amount of "stuff" I am made from which is measured in kg

Weight - Is how strongly gravity pulls on that Mass, where gravity is taken as 9.81m/S^2

Then shouldn't my weight be given in units of:-

kg * m/s^2

These units are Newtons

If that is correct then why does my scale only say 95kg??

OR

Is the scale measuring my Mass which is 95kg and it is just normal practise to say my weight is the same as my Mass even though that is incorrect?

From my perspective the scale should read 95kg * m/s^2 which is my weight or 95 Newtons.

Your thoughts?

Thank you.

I was hoping someone could clear up the units & difference between Mass and Weight.

I live in the UK.

I weighed myself today on the scale and the scale told me that I weighed 95kg.

What bothers me is that if:-

Mass - Is the amount of "stuff" I am made from which is measured in kg

Weight - Is how strongly gravity pulls on that Mass, where gravity is taken as 9.81m/S^2

Then shouldn't my weight be given in units of:-

kg * m/s^2

These units are Newtons

If that is correct then why does my scale only say 95kg??

OR

Is the scale measuring my Mass which is 95kg and it is just normal practise to say my weight is the same as my Mass even though that is incorrect?

From my perspective the scale should read 95kg * m/s^2 which is my weight or 95 Newtons.

Your thoughts?

Thank you.