Say we have a platform with 4 legs attached. Attached to each leg is a small cushion. If we drop our object of mass m a distance h, the small cushions compress completely in time t. So we have variables: m,h,t My analysis went has follows: 1. Energy conservation to find the max velocity the instant before our object hits the ground. mgh = (1/2)mv^2 v = sqrt(2gh) 2. To find the impact force, set impulse equal to the change in momentum. J = mv2 - mv1 = F*t v2 = 0 because our object will stop when it is fully compressed, and v1 is the velocity calculated earlier. F*t = -m*sqrt(2gh) |F| = (m*sqrt(2gh))/t 3. In order to find the force in each leg... |F| = (0.25)*(m*sqrt(2gh))/t Is this correct? Thanks for the help!