60 %% in water 209% in air Data Lead Weight in air 131, 68 (9) 0. 13168 (kg)| 1. 29 (N) Weight in water 19. 74 0. 11974 1. 17 Buoyancy Table 1 Analysis of Data Part I 1. Calculate the volume of the object using Archimedes Principle F,= Paqua V cabjeong 2. Knowing that Weight in air =Prabject V tobject , calculate the density of Lead 3. Calculate the percent error using the theoretical value from table 10.1. Part II 2. Use your estimate from Part II to calculate the density of the wood, knowing that for a partially submerged object F,, = F. Conclusion Discuss sources of error in your conclusion.Lab 8: Archimedes' Principle Objective: In this experiment you will verify Archimedes' principle by weighing objects in the air and submerged in a fluid. Apparatus: The equipment consists of a lead object, a block of wood, a balance, and a beaker. Theory: If an object is weighed in a fluid, the balance doesn't simply measure the weight of the object. This is because there is a buoyant force upward on the object, equal to the weight of the fluid displaced by the object. The balance therefore records the weight of the object minus the buoyant force. Air is a fluid, so when an object is weighed in air, the balance doesn't record the correct weight. For example, the correction for steel weighed in air versus the correct value in vacuum is 0.017%. This is certainly acceptable for many situations. Since liquids are denser, they are more buoyant, and they will greatly affect the answer when you attempt to measure the weight of an object submerged in a liquid. Procedure: Carefully zero the balance before making any measurements. Be sure that the balance arm is resting on the knife edge, and is not in the stored position. When weighing objects under fluids, be sure to remove any bubbles attached to the objects. Part I - Object more dense than water 1. Measure the mass of the lead object in air. Record the mass in table 1. 2. Measure the apparent mass of the lead object in water. Record the apparent mass in table 1. Part II - Object less dense than water If an object is less dense than a fluid, it won't stay under the surface of the fluid. Float the block of wood in the beaker of water. Estimate what percent of the block is submerged