Part A (Figure 1)Block 1, of mass m₁ = 0.700 kg, is connected over an ideal (massless and frictionless) pulley to block 2, of mass m2, as shown. For an angle of 0 = 30.0° and a coefficient of kinetic friction between block 2 and the plane of 0.400, an acceleration of magnitude a = 0.500 m/s² is observed for block 2. Find the mass of block 2, m2. Express your answer numerically in kilograms. ▷ View Available Hint(s) Figure < 1 of 1 mi 1112 m2 = Η ΑΣΦ Submit Previous Answers × Incorrect; Try Again; 4 attempts remaining Provide Feedback ? kg

Problem 4: Speed deamplifier. In the figure above on the right, block 1 of mass m1 slides along an x-axis on a frictionless floor at speed 4 m/sec.Then it undergoes a one-dimensional elastic collision with stationary block 2 of mass m2 = 2m1. Next, block 2 undergoes a one-dimensional elastic collision with stationary block 3 of mass mz = 4m1. What then is the speed of block 3? Answer: 16 m/sec or 1.78 m/sec.