Question

If motor M exerts a force of F=(10t^2+100)N on the cable, where t is in seconds, determine the velocity of the 25kg crate when t=4s. The coefficients of static and kinetic friction between the crate and the place are ÃŽ¼s=0.3 and ÃŽ¼k = 0.25, respectively. The crate is intially at rest.