I think the formula of ~ ~ free fall is: S = 1/2GGTT, g=9.8m/s2, which is a measure, so the time t is only related to the distance S ~, but the centripetal force of pinching ~ ~ is F =ma, (A =g is free fall), so A = F /m, F. Through mathematical calculation. Then the big balls should land first ~ ... but how to say it ~ I don't think air resistance will affect their landing in real life ... In reality, they will definitely land at the same time ... Besides, it is meaningless to consider what a small surface area is ... (Derived from the above formula)