The centers of two spheres A and B, with weights WA = 3 lb and WB = 7 lb, respectively, ar...

The centers of two spheres A and B, with weights WA = 3 lb and WB = 7 lb, respectively, are a distance r0 = 5 ft apart when they are released from rest. Using Eq. (1.6) on p. 5, determine the speed with which they collide if the diameters of spheres A and B are dA = 2.5 in. and dB = 4 in., respectively. Assume that the two masses are infinitely far from any other mass.

Figure P3.120