Question

2 2. A 60 kg sofa 4m long is carried by James and Sarah. James is holding the sofa 0.2 m from an end. Sarah is holding the sofa by the other end. A passing moron places a 40 kg box of books on the sofa 0.5 m from the end Sarah is holding How much weight is Sarah holding now? a) 590 N b)610 N C) 620 N 0.5h 1 1S? 0,2 J d) 730 N e) 780 N Man

can someone give me the reasoning behind this.
specifically the equations.

Answer 1

tos Ceren data, mass of sofa boug mass of boxa a long Here weight of Soba alto cu center tar 601987 let us consides moments about À is im 60.69:8)(2-012)+4019.87 C4-02-015) -S(4-012) zo Чт 105814 +129316 4S 3185 3.8 S = 2352 S=618,947 N S9 620N ontin@w correct.