Problem 4 Buoyancy A lock of mass 30 kg and volume 0.025m² is allowed to sink in water as shown below. A cylindrical rod of mass 1.25 kg, 5 m long, and 25 cm² in cross-section is attached to the weight and to the wall. 1. What will the angle be for equilibrium? 2. If the mass M is released from the road at equilibrium, how much of the rod will remain submerged? 0.25 m 5 m M = 30 kg V=0.025 m³ Figure 4: Lock sinking in water is attached to a wall with the use of a cylindrical rod