1: Assuming that the masses of the rope and frictionless pulley are negligible, calculate the acceleration of each block and the tension in the rope. Block 1 has mass 2.00 kg and block 2 has mass 4.00 kg. Consider g=9.8m/s2. 2: An elastic cord exerts a nonlinear elastic force of magnitude F(x) = kix+k2x3. where x is the distance the string is stretched, and (1 = 204 N/my k2 = -0,233 N/m3. * How much work must be done on the rope to stretch it 10m? * If at x=10m, the force acts in a time of 0.00025 seconds, calculate the impetus or impulse