
Elementary Math Fractions, Percentages, Word Problems, Equations, Inequations, Factorization, Expansion 
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September 27th, 2016, 01:09 PM  #1 
Member Joined: Nov 2012 From: The Netherlands Posts: 30 Thanks: 1  moments and force
sam makes a punch hole with the perforater( two holes ). She presses the lever at A down with a force of 40 N. Calculate the total force which a single pin presses on the paper. 2. Relevant data http://s6.postimg.org/yx62wbild/image.png 3. The attempt at a solution would it be : 40 N X 5 cm = 1,1cm X 'x' ? 
September 27th, 2016, 02:24 PM  #2 
Senior Member Joined: Aug 2016 From: morocco Posts: 273 Thanks: 32 
we look for f such that 40*(5+1.1)=(2f)*1.1 thus f=... N. 
September 28th, 2016, 01:33 AM  #3 
Member Joined: Nov 2012 From: The Netherlands Posts: 30 Thanks: 1 
Thank you !


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