The beam has a circular cross-section, and it has straight segment of length 2R followed by a quarter circle of radius R. (Given: E, G, I = ly = 1, J = 21) -2R- TT/2 x R P2 A B N P Neglecting shear energy due to transverse force and axial energy due to axial force, determine a) the displacement of point A in y-direction due to force P applied at point B only. The coordinates of points A and B are (0,0,0) and (-R,0,-R), respectively. Note that P is paralel to y-axis. b) the angle of twist of point A due to force P applied at point B only. c) the displacement of point B in z-direction due to force P only. Note that P2 is paralel to x-axis. d) the displacement of point B in y-direction due to force P only.