Question 1137279
{{{ W }}} is the mass in kg
Let {{{ k }}} = constant
{{{ W = k*L*d^2 }}}
{{{ W = 140 }}}
{{{ L = 54 }}}
{{{ d = 4 }}}
{{{ 140 = k*54*4^2 }}}
{{{ 140 = 864k }}}
{{{ k = .16204 }}}
{{{ d^2 = W/( k*L ) }}}
{{{ d = sqrt( W/( k*L )) }}}
{{{ d = sqrt( W/( .16204L )) }}}
check:
{{{ d = sqrt( 140/( .16204*54 )) }}}
{{{ d = sqrt( 140/8.75 ) }}}
{{{ d = sqrt( 16 ) }}}
{{{ d = 4 }}}