Particle A of mass m_A = 1.0 kg is at the edge of a table with height 1.0 m. It is connected to a particle B of mass m_B = 3.0 kg by a light, inextensible string of length 0.50 m. Particle B is 0.20 m from the table edge and AB is perpendicular to the table. Particle A is pushed gently off the table. (a) Find the velocity with which particle B begins to move. (b) If thr coefficient of friction between B and the table is 0.20, find the speed with which B leaves the table.