Answer to Question #77788 in Mechanics | Relativity for abdulrehman

Question

6. A string fixed at both ends (x = 0 andx = l) starts to oscillate under a suddenly
applied distributed load with constant density q. Find the vibrational pattern if
at the initial moment the string was at rest.
7. A uniform solid disk with mass М and radius R is placed on a horizontal plane
at time t = 0. The sliding and rolling friction coefficients are, respectively, μ и
fk. Initial velocity of the center of mass is v0 and angular velocity is ω0. Find the
times t1 and t2, at which the slipping finishes and the disk stops respectively.