# What are the standard units for inertial mass and gravitational mass?

1. Jan 20, 2008

[SOLVED] What are the standard units for inertial mass and gravitational mass?

1. What are the standard units for inertial mass and gravitational mass? And also apparently gravitational mass can be measured without gravity how can it be done?

Thank you very much. My teacher said a hint is in the movie A space odysey 2001.

2. Jan 20, 2008

### Kurdt

Staff Emeritus
What do you think so far?

3. Jan 20, 2008

i thnk gravitational mass is N/kg and inertial..I have no idea =(

4. Jan 20, 2008

### Kurdt

Staff Emeritus
That would be incorrect. Its not a trick question. What units do you usually use for mass?

5. Jan 20, 2008

we would use kg, or grams, etc.

6. Jan 20, 2008

### Kurdt

Staff Emeritus
Well the SI unit is kg.

7. Jan 20, 2008

oh thank you =), so how can I determine the SI units for inertial mass?

8. Jan 20, 2008

### Kurdt

Staff Emeritus
What units do you use for mass in equations like F=ma?

9. Jan 20, 2008

oh also kilograms, so that means the inertial mass is in kilograms too?

10. Jan 20, 2008

### Kurdt

Staff Emeritus
Yes thats right.

11. Jan 20, 2008