2. a water wave has a speed of 4 m/s and 10
waves go past each 30 seconds.
calculate the wavelength of the waves.

What is the magnitude of the resultant vector round your answer to the nearest tenth

If the ama of the inclined plane below is 2, calculate the ima and efficiency. ima = efficiency =

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.