1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Weight vs Mass On Moon and Mars Imperial Units

Tags:
  1. Sep 3, 2013 #1
    1. The problem statement, all variables and given/known data
    Moon's gravity is 5.31ft/sec^2 An object has the weight of 3.5 lb-f on the moon. What is its lb-m
    What is the lb-m and lb-f on Mars with gravity of 12.1 ft/sec^2.


    2. Relevant equations
    w=mg=mg/gc

    gc= gravitational constant----> 32lbm*ft/sec^2 for earth

    3. The attempt at a solution
    So I understand mass is the same everywhere. Also lb-m and lb-f are the same numerically on earth but not on other planets?

    Im just really confused with imperial units because i dont understand when to use or not use the gc.
     
  2. jcsd
  3. Sep 3, 2013 #2
    ## 1 \ \text{lbf} = 32.174 \ \frac {\text{ft} \cdot \text{lbm}} {\text{s}^2} ##.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted



Similar Discussions: Weight vs Mass On Moon and Mars Imperial Units
  1. Weight on Mars (Replies: 6)

Loading...