A 16-lb block A slides in a vertical frictionless slot and is connected to a moving support B by means of a spring AB of constant 130 lb/k = ft. Knowing that the displacement of the support is δ = δm sin ωft where δm = 6in., determine the range of values of f ω for which the amplitude of the fluctuating force exerted by the spring on the block is less than 30 lb.

Transcribed Image Text:

B A 6=& sin tot