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!

Homework Help: Magnitude of normal force from ceiling to man

  1. Sep 22, 2012 #1
    1. The problem statement, all variables and given/known data
    tall strongman of mass m = 93 kg stands upon a scale while at the same time pushing on the ceiling in a small room.If the scale reads 1062 N (about 239 lb), what is the magnitude of the normal force that the ceiling exerts on the strongman?

    2. Relevant equations

    N=m x g
    3. The attempt at a solution

    N= 93kg x 9.81= 912 N
  2. jcsd
  3. Sep 22, 2012 #2


    User Avatar
    Homework Helper
    Gold Member
    2017 Award

    N = mg is not correct. Try drawing a good free-body diagram for the man. You'll need to consider how many forces act on the man and what direction they point.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook