13.14 13.15 where Gm is unitless, but is understood to be in units of 1 g. 13.16 Gm is proportional to the square root of the drop height: This means that if we double the drop height, the magnitude of the shock is not doubled, but rather increased by a factor of (about 1.4). Equation 13.15 may be rearranged to produce an expression for : 13.17 2 max W P Gm = 2 2 2 2 2 2 2 W k h W k W h Gm = = st m h G  2 = Gm  h h W G k m 2 2 2 2 =13.14 13.15 where Gm is unitless, but is understood to be in units of 1 g. 13.16 Gm is proportional to the square root of the drop height: This means that if we double the drop height, the magnitude of the shock is not doubled, but rather increased by a factor of (about 1.4). Equation 13.15 may be rearranged to produce an expression for : 13.17 2 max W P Gm = 2 2 2 2 2 2 2 W k h W k W h Gm = = st m h G  2 = Gm  h h W G k m 2 2 2 2 =