So assuming the same tires, and brakes that can hold the tires at that maximum static force, I don't see why mass would increase braking distance. (mechanics.stackexchange.com)
Second, the CPSC's standard adds a sentence to section 7.7.1 of ASTM F 1169 - 11 to clarify how to conduct the spindle / slat static force test with a crib that has folding or movable sides (§ 1219.2 (b)(2) of the CPSC's standard). (cpsc.gov)
Rather must all these mobile or static forces, seized by the soul's rapture, plunge of their own accord, as it were, into the mightiness of decision and dissolve within it. (religion-online.org)