3. In the phase shown in figure the block A is moving down at 5 ft/s. The cylinder B is considered a homogeneous solid and moves in frictionless bearings. The spring is originally compressed 6 in and has a modulus of 6 lb/ft. What will be the speed v of A after dropping 4 ft? =322 lb Wc= C 6 in B μ=0.20 WB=193.2 lb A W₁ = 161 lb