A 3.00- kg mass rests on the ground. It is attached to a string which goes vertically to and over an 14) ideal pulley. A second mass is attached to the other end of the string and released. The 3.00-kg mass rises 50am in 1.00 s. How large was the other mass? A) 7.15 kg B) 6.83 kg C) 4.29 kg D) 367 kg æ°7.34 kg Figure 6 12 Block A has a mass of 3.0 kg and can slide along a smooth plane inclined 30 to the horizontal. What is the mass of block B if the system is in equilibrium?