Example 5.B.7 of the lecture book describes a system made up of bar OC pinned to ground at O, and pinned to the center of a disk at C, as shown below. In that problem, we are asked to relate the ...
Researchers have developed a new, lightweight foam made from carbon nanotubes that, when used as a helmet liner, absorbed the kinetic energy caused by an impact almost 30 times better than liners ...