Answer Happy

Q2. [10+10+12 = 32 points] Consider the wooden block having a dimension of 50 cm x 50 cm x 50 cm. If released in water (water density = 1000 kg/m), 36 cm of its height remains submerged as shown in Figure 2a. (a) What is the density of the wooden block? Now the same block is held within a large water tank with the help of a rope that is attached to the tank bottom as shown in Figure 2b, but in this case the block is forced to be submerged to a height of 45 cm. Determine for this case: (b) The buoyant force on the wooden block (c) The tension in the rope. 50 -36 85 rope Figure 2a Figure 2b Q3. [16+16 = 32 points) Two linear springs are connected in parallel as shown below in Figure 3a. The spring constant of spring 1 (ki) is 500 N/m. The spring constant of spring 2 (ka) is unknown. When a force F= 200 N is applied to this spring system, an overall elongation of 25 cm from equilibrium position is observed. (a) Determine the unknown spring constant kz. (b) If the springs are connected in series (as shown in Figure 3b), how much force will be required to achieve the same overall elongation of 25 cm from the equilibrium position?