A boy weighing 350 N run up a flight of stairs consisting of 20 steps each 10 CM high In 10 seconds. what is his power?​

Consider a double atwood machine constructed as follows: a mass 4m is suspended from a string that passes over a massless pulley on frictionless bearings. the other end of this string supports a second similar pulley, over which passes a second string supporting a mass of 3m at one end and m at the other. using two suitable generalized coordinates, set up the lagrangian and use the lagrange equations to find the acceleration of the mass 4m when the system is released. explain why the top pulley rotates even though it carries equal weights on each side.

A( developed during the process of technology design

Abowling ball rolling down the lane toward the pins has gravitational potential energy. a. no b. a lot of c. a little