A cantilever beam AB supports a block which causes a static deflection of 8 mm at B. Assum...

A cantilever beam AB supports a block which causes a static deflection of 8 mm at B. Assuming that the support at A undergoes a vertical periodic displacement δ = δm sin ωft, where δm = 2 mm, determine the range of values of ωf for which the amplitude of the motion of the block will be less than 4 mm. Neglect the weight of the beam and assume that the block does not leave the beam.

Fig. P19.106