Aman pushes on a piano of mass 180 kg so that it slides at a constant velocity down a ramp that is inclined at 11° above the horizontal. no appreciable friction is acting on the piano. calculate the magnitude and direction of this push if the man pushes parallel to the incline. 34.3 n up the incline 337 n up the incline 337 n down the incline 34.3 n down the incline