QUESTION 39 As shown in the figure below, Blocks A and B, with masses of ma and mB respectively, sit on two sides from the pivot point O. g is the gravity acceleration. The distances from the blocks to the pivot point O are LA 0.5 m and LB 3 m. The system is in cquilibrium. Knowing mA= 100 kg, what is mg in unit of kg? (Please provide your numerical answer without unit! Please write your numerical answer with all digits and do not use scientific notation. If you are not sure about the number of significant figures, you can keep the number of figures as many as possible - You will not be punished for doing this. No unit in your answer.) A LA LB mBg

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