, etc., are 25 times the former values, but the cohesive forces, which vary directly as
, etc., are only 5 times the first values. Hence, if the former values of
are multiplied by 5, the new diagram of forces, [Fig. 11], will be similar to the old one. Thus, for the wall 12 ft. high, the plane of rupture and the value of
, for
, correspond to the old values for