The 75 lb block is released from rest 5 ft above the plate. Determine the compression of each spring when the block momentarily comes to rest after striking the plate. Neglect the mass of the plate. The springs are initially unstretched.
Enter your answers numerically separated by commas. Sa=, Sb=, Sc=

 

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A k = 1000 lb/ft 0.25 ft 5 ft C B k = 1000 lb/ft k' = 1500 lb/ft A k = 1000 lb/ft 0.25 ft 5 ft C B k = 1000 lb/ft k' = 1500 lb/ft