Answer Happy

5 (a) Figure Q5(a) shows the orientations of masses mp=500 g, mo=400 g and me=600 g attached on a rotating circular plate at radial distances rp=250 mm, rq=200 mm and rr=150 mm respectively in a single plane. It is required to balance the plate by adding a single mass ms at a radial distance of rs=100 mm. Determine the magnitude and orientation of the balancing mass using the graphical method. (8) у MR PR وتی ہے 50° 30° rp х mp Figure Q5(a) (b) A shaft system consists two discs with out of balance masses at planes A and B as shown in Figure 25(b) overleaf. The masses are located at the following radii: ma = 3 kg ; ra= 80 mm me = 2 kg ; rb = 120 mm Masses mm and my are to be placed at planes M and N respectively to produce static and dynamic balance of the shaft system. Using graphical analysis, determine the magnitudes and orientations of the masses mm and mn to be placed in two planes at radial distances rm=50 mm in plane M and rn=90 mm in plane N respectively. (12)
5 (b) у AB byc a ma ma 45° ra X х z N - M N a = rB shaft 200 mm 100 mm 150 mm b = 30° C = me mB Figure 05(b) (Not to scale)