Block 1, of mass m1 = 0.700 , is connected over an ideal (massless and frictionless) pulley to block 2, of mass , as shown. Assume that the blocks accelerate as shown with an acceleration of magnitude = 0.300 and that the coefficient of kinetic friction between block 2 and the plane is = 0.400.Find the mass of block 2, , when = 30.0.