A UNIFORM PLANK OF MASS 40KG AND LENGTH 30m REST HORIZONTALLY ON TWO SUPPORT P AND Q, WHERE LENGTH PX IS 8m AND LENGTH QX IS 18 m. OBJECTS OF MASSES 10kg AND 5 kg ARE HANGED AT POINT M and N RESPECTIVELY, WHERE LENGTH MX IS 10 m and LENGTH NY IS 6m. IF THE SYSTEM REMAINS IN EQUILIBRIUM UNDER THE ACTION OF THREE FORCES, CALCULATE THE PRESSURE EXERTED ON I) P II) Q

Question

A UNIFORM PLANK OF MASS 40KG AND LENGTH 30m  REST HORIZONTALLY ON TWO SUPPORT P AND Q, WHERE LENGTH PX IS 8m  AND LENGTH QX IS 18 m.  OBJECTS OF MASSES 10kg AND 5 kg ARE HANGED AT POINT M and  N RESPECTIVELY, WHERE LENGTH MX IS 10 m  and LENGTH NY IS 6m.   IF THE SYSTEM REMAINS IN EQUILIBRIUM UNDER  THE ACTION  OF THREE FORCES, CALCULATE THE PRESSURE EXERTED ON I) P               II)  Q