Two masses m1 and m2 move in a plane and interact by a potential energy u(r) = 1/2kr^2. write down their lagrangian in terms of the cm and relative positions r and r, and find the equations of motion for the coordinates x, y and x, y. describe the motion and find the frequency of the relative motion.

compass can be used day and night, cloudy or sunny

truck y has a greater velocity than truck x.

the skeletons of most mammals reach a certain size and then stop growing. however, many animals, including some mammals, keep growing throughout their lives. kangaroos, for example, just keep growing and growing until they die. also, the longer an animal lives the greater the chance it might catch some deadly disease.

pecialized keyboards