일반물리학 1 — Force and Motion-I: Problem 57

57 Two blocks of masses \( m_1 = 8.0\text{ kg} \) and \( m_2 = 4.0\text{ kg} \) are connected by a string as shown in Fig. 5-42, over a frictionless pulley of negligible mass. What is the acceleration magnitude of the two-block system if \( \theta = 30.0^\circ \)?