The block shown in Figure 2.77 is acted on by the force

\[ F(t)=100+25 \sin 75 t \mathrm{~N} \]

and, after the transients have died out, it oscillates with an amplitude of \(0.6 \mathrm{~mm}\) about a position \(55 \mathrm{~mm}\) to the right of the static equilibrium position corresponding to the condition when no force is present. What is the mass of the block?

Transcribed Image Text:

6000 m F Figure 2.77: Block subjected to external force.