Question 190827
lets call the support s length L width w and depth d
:
sL/wd=k
:
{{{630L/2(5)^2=k}}}
:
{{{k=630L/50}}}
:
now the width is 5 and the depth is 2 find s
:
{{{sL/5(2)^2=630L/50}}}
:
{{{s=630*20/50=252}}}kg ..........L's cancelled each other