Two Newton spring scales (negligible mass) are suspended as shown in the diagram below. If a 3.0 N mass is hung on scale 'A' and a 6.0 N mass is hung on scale 'B', the readings on the two scales would be 10 ??? 3 Scale A 6 5 3.0 N mass ???3 Scale B 5 6.0 N mass Scale A : 3 N Scale B: 6 N Scale A : 9 N Scale B: 9 N Scale A : 9 N Scale B: 6 N Scale A : 3 N Scale B: 9 N