## brinethery 3 years ago Comments/ critiques on my explanation and examples of lbl vs. lbf? http://www.scribd.com/doc/85548870/Conversions-Involving-Lbl-Lbf-Lbm-and-Slugs Are there any other good examples you can think of to give someone who is just learning the English system of force and mass?

1. brinethery

Oops, typo on ex. 5. I'll fix that :-)

2. No-data

Don't worry I haven't get there yet =P

3. No-data

We need to comment a lot about the writting but the most important is to solve the problems. Sorry I'm a little to much slow =P.

4. brinethery

That's okay! I just had a lightbulb pop up in my head when I realized that I could explain this stuff better than how it was explained in the packet that my instructor gave me.

5. brinethery

I'll return in a while, I haven't abandoned this thread.

6. No-data

ok

7. brinethery

I have uploaded a revision of my document with more examples :-) http://www.scribd.com/doc/85548870/Conversions-Involving-Lbl-Lbf-Lbm-and-Slugs My goal was to beat the living hell out of this concept... a lot of the people in my class were just NOT understanding.

8. brinethery

So is there anything wrong?

9. No-data

I don't know =(. Actually I did not know the unit called poundal.

10. brinethery

:-)

11. No-data

The things your wrote are very logically indeed and it seems to me that is right.

12. No-data

But I'm not completly sure because I can not understand yet the conversion between slugs and lbm.

13. No-data

I thought that the lbm was a unit of mass. Now I'm very confused about it.

14. brinethery

Slug to lbm is similar to saying kilogram to gram. lbm is just a scaled-down version of slugs. lbm and slugs are both mass.

15. brinethery

lbl and lbf are units of force.

16. No-data

and what is the scale factor?

17. No-data

32.174?

18. brinethery

1 slug = 32.174 lbm

19. No-data

and that is independent of the planet?

20. brinethery

I meant... an object of a mass of 2 slugs on earth will be 2 slugs on Pluto... or wherever.

21. No-data

Ohh ok. I think I got it more clear.

22. No-data

Thank you brinethery!

23. brinethery

Yay! I have educated an engineer in mechatronics!

24. No-data

hahaha I'm not an engineer yet =P

25. brinethery

that's okay anyway :-)

26. brinethery

I gave this document to my instructor and he really liked it.

27. No-data

But thank you so much. I need to think about these units systems a lot more. I always skip that part haha.

28. No-data

Yeah! is very good. Congratulations good job =).

29. No-data

you're educatin engineer all over the world.

30. No-data

that's awesome =P

31. brinethery

I think once you really GET this basic stuff on lbm, slugs, whatever... then all the other stuff involving these units becomes really easy. (But when I'm ruler of the universe, anyone who so as mentions gallons, slugs, lbm, etc. will be be-headed on the spot)

32. brinethery

Thank you for all your support :-)

33. No-data

Haha I support you on that!

34. brinethery

hahaha

35. No-data

Well have a good night brinethery. Now I can sleep in peace.

36. brinethery

Lol... as long as you learn something you'll sleep well.

37. brinethery

'night