The concrete block weighs$644\mathrm{????}\mathrm{????}$ and is raised by the mechanism that is

sample, where the cables are wrapped securely around the

respective rollers. The rollers, which are held together$\mathrm{in}$ and they spin as one

unit around its center of mass in$\mathrm{????},$ They have a combined weight of$322$

$\mathrm{????}\mathrm{????}$ and a turning radius around$\mathrm{????}$ de $18$ pulgadas. $\mathrm{????}\mathrm{????}$ the power unit

maintains a tension$\mathrm{from}$n constant$\mathrm{????}=400\mathrm{????}\mathrm{????}$ en $\mathrm{????},$ determine the acceleration$\mathrm{from}$n

vertical of the concrete block.

Please indicate your answer in$\mathrm{????}\frac{\mathrm{????}}{\mathrm{????}}2,$ Use two decimal places in your answer after$é$s the

round. The concrete block weighs$644$ lb and is raised by the mechanism shown, where the cables are wrapped securely around the respective rollers. The rollers, which are held together$\mathrm{in}$ and rotate as a single unit around their center of mass at O$,$ They have a combined weight of$322$ lb and a radius of gyration around O of$18$ inches. If the power unit maintains a tension$\mathrm{from}$n constant P$=400$ lb in A$,$ determine the acceleration$\mathrm{from}$n vertical of the concrete block.