Daily Handout Week 5 Day 1 Topics: Fluids Submit to Blackboard by 11:59 pm. Upload to W5D1-HO Folder 1. A wood board floats in fresh water with 60% of its volume under water. What is the density of the wood in 𝑔𝑐𝑚3? Answer: ρ = 0.6gcm3 2. The dimensions of a wooden raft (density = 150 kg/m3) are 3.0 m x 3.0 m x 1.0 m. What maximum load can it carry in sea water (density =1020 kg/m3)? Answer: M = 7800 kg3. A tin can has a volume of 1000 cm3 and a mass of 100 g. Approximately, what mass of lead shot can it carry without sinking in water? Answer: m = 900 g 4. A block of weight mg = 45 N has part of its volume submerged in a beaker of water. The block is partially supported by a string of fixed length that is tied to a support above the beaker. When 80% of the block’s volume is submerged, the tension in the string is 5.0 N. (a) What is the magnitude of the buoyant force acting on the block? (b) Water is steadily removed from the beaker, causing the block to become less submerged. The string breaks when its tension exceeds 35 N. What percent of the block’s volume is submerged at the moment the string breaks? (c) After the string breaks, the block comes to a new equilibrium position in the beaker. At equilibrium, what percent of the block’s volume is submerged? Answers: (a) FB= 40 N (b) f = 20% (c) f =