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PHY250L Lab 8 Buoyant Force & Archimedes Principle Straighterline FALL 2023, Lab Reports of Physics

University of LeedsPhysics

PHY250L Lab 8 Buoyant Force & Archimedes Principle Straighterline FALL 2023/PHY250L Lab 8 Buoyant Force & Archimedes Principle Straighterline FALL 2023PHY250L Lab 8 Buoyant Force & Archimedes Principle Straighterline FALL 2023PHY250L Lab 8 Buoyant Force & Archimedes Principle Straighterline FALL 2023PHY250L Lab 8 Buoyant Force & Archimedes Principle Straighterline FALL 2023PHY250L Lab 8 Buoyant Force & Archimedes Principle Straighterline FALL 2023PHY250L Lab 8 Buoyant Force & Archimedes Principle Straighterline FALL 2023PHY250L Lab 8 Buoyant Force & Archimedes Principle Straighterline FALL 2023PHY250L Lab 8 Buoyant Force & Archimedes Principle Straighterline FALL 2023PHY250L Lab 8 Buoyant Force & Archimedes Principle Straighterline FALL 2023PHY250L Lab 8 Buoyant Force & Archimedes Principle Straighterline FALL 2023PHY250L Lab 8 Buoyant Force & Archimedes Principle Straighterline FALL 2023PHY250L Lab 8 Buoyant Force & Archimedes Principle Straighterline FALL 2023PHY250L Lab 8 Buoyant Fo

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Lab 8 Buoyant Force & Archimedes Principle PHY250L
Student Name: Zach Pollock
Access Code (located on the underside of the lid of your lab kit): AC-8ZMQDJE.
Lab Report Format Expectations
Utilize college level grammar and formatting when answering text based questions.
Report all equations in a proper mathematical format, with the correct signs and symbols.
Submissions with incomplete or improperly formatted responses may be rejected.
Pre-Lab Questions
1. Archimedes' principle is a fundamental concept in fluid mechanics and relates directly to the
buoyant force. Archimedes' principle states that:
"Any object, wholly or partially immersed in a fluid, is buoyed up by a force equal to the weight of the
fluid displaced by the object."
In your own words, explain the Buoyant Force as it relates to Archimedes Principle. Ensure that you
discuss this in terms of the equation for Buoyant Force.
The Buoyant Force is when an object comes into contact with the water surface and experiences
more force when the object is under the water surface. The deeper an object is the more water
pressure it has to deal will. Two objects can experience pressure but the object that is deeper than
the other object deals with more pressure. The formula that applies to this concept is P=pgh, p
representing the density, g is the gravity, and h is the height. Pressure is apllied downards when
someone continues to go deeper into a body of water, gravity is also a factor, and the height
describes how much water is placed on top of something or someone. For a lab experiment of
comparing two different masses Buoyant Force will also be observed by comparing the water
displacement after it has been placed inside a beaker filled with water. A 5N scale will be used to
measure the total mass of an object without being submerged in water and within the beaker.
When a mass is placed within the water the mass becomes lighter, allowing the force of the object
to fall slower compared to normal gravity levels.
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Download PHY250L Lab 8 Buoyant Force & Archimedes Principle Straighterline FALL 2023 and more Lab Reports Physics in PDF only on Docsity!

Student Name: Zach Pollock

Access Code (located on the underside of the lid of your lab kit): AC-8ZMQDJE.

Lab Report Format Expectations Utilize college level grammar and formatting when answering text based questions. Report all equations in a proper mathematical format, with the correct signs and symbols. Submissions with incomplete or improperly formatted responses may be rejected.

Pre-Lab Questions

  1. Archimedes' principle is a fundamental concept in fluid mechanics and relates directly to the buoyant force. Archimedes' principle states that: "Any object, wholly or partially immersed in a fluid, is buoyed up by a force equal to the weight of the fluid displaced by the object." In your own words, explain the Buoyant Force as it relates to Archimedes Principle. Ensure that you discuss this in terms of the equation for Buoyant Force. The Buoyant Force is when an object comes into contact with the water surface and experiences more force when the object is under the water surface. The deeper an object is the more water pressure it has to deal will. Two objects can experience pressure but the object that is deeper than the other object deals with more pressure. The formula that applies to this concept is P=pgh, p representing the density, g is the gravity, and h is the height. Pressure is apllied downards when someone continues to go deeper into a body of water, gravity is also a factor, and the height describes how much water is placed on top of something or someone. For a lab experiment of comparing two different masses Buoyant Force will also be observed by comparing the water displacement after it has been placed inside a beaker filled with water. A 5N scale will be used to measure the total mass of an object without being submerged in water and within the beaker. When a mass is placed within the water the mass becomes lighter, allowing the force of the object to fall slower compared to normal gravity levels.
  1. Draw a free body diagram of a hanging mass before it is submerged in water. Make sure to label your forces and include your handwritten name in the background.
  1. Apply Newton’s second law to your free body diagram from Pre-Lab Question 3 to solve for the magnitude of the buoyant force. Fg=Fb=mg.
  2. In this experiment, you will mix objects and liquids of varying densities to demonstrate density’s connection to buoyancy. Sketch and label the arrangement of objects and liquids in the beaker that you expect to see. Include your handwritten name in the background.

Data and Observations

Insert a photo below of your container after completing Step 8 of the procedure. Your photo must include your handwritten name, as well as all of the materials required for this experiment. Submissions that do not contain a photo with these requirements will be rejected.

Data and Observations

Record the maximum number of washers your clay boat was able to hold in both the salt and plain water samples. Table 1. Number of Washers a Clay Boat Can Hold Before Sinking Type of Liquid Number of Washers Plain Water 2 Salt Water 3 Insert a photo of your clay boat on salt water carrying the maximum number of washers you recorded in Table 1, ensuring you include your handwritten name in the background. Your photo must clearly depict your boat floating with the number of washers you recorded. Submissions that include a response to this question that do not utilize data from Table 1 above will be rejected.

Insert a photo of your clay boat on plain water carrying the maximum number of washers you recorded in Table 1, ensuring you include your handwritten name in the background. Your photo must clearly depict your boat floating with the number of washers you recorded. Submissions that include a response to this question that do not utilize data from Table 1 above will be rejected.

Results and Discussion

  1. Was your hypothesis from Question 1 in the experiment introduction correct? Why did one type of water hold more washers than the other? Use the concepts from the lab to explain this. Salt allows objects to rise higher and have a better buoyancy. If an object falls through water then gravity is able to pull the object down. Salt acts as a tension force and keeps the boat in my experiment from sinking.

EXPERIMENT 3: BUOYANT FORCE AND ARCHIMEDES PRINCIPLE

Introduction Questions

  1. What happens to the apparent weight when the objects are submerged in water? The apparent weight decreases when the objects are submerged in water because of the buoyant force acting on them.
  2. In this lab, you will look for the weight change of a rubber stopper and a 250 gram mass before and after they are suspended in water. The Buoyant Force will be the difference between these two values. Will this value be positive or negative? Hint: You may want to refer back to your pre- lab questions. The value will be negative because if were submerging two objects in water before and after, then the force of the mass will bring the two objects down. Also the 250g mass is bigger in size compared to the rubber stopper. The rubber stopper will experience more water pressure than the 250g mass because it is closer to the water surface. The object that is furthest from the water surface will experience the most Buoyant Force.

Data and Observations

Input the base edge length (for a hexagonal mass set) or the diameter (for a cylindrical mass set) of your 250 gram hanging mass, and its measured height into Table 2, below. Table 2. Dimensions of 250g Hanging Mass Base Edge Length or Diameter (cm) Height (cm) 3.0cm 5.0cm Input the weight of the stopper and 250 gram mass both before and after adding it to your container of water. Subtract these values to come up with the Buoyant Force. Note the volume change and include all these values in Table 3, below. Table 3. 250 g Hanging Mass Buoyancy Data Object Weight in Air (N) Weight in Water (N) Buoyancy Force (N) Volume Displaced (mL) 250 g Hanging Mass 2.55N 2.35N 0.20N 26mL

Insert two photos of your scale’s measurement of the 250 gram mass (in one photo) and rubber stopper (in the other photo) while suspended in your container of water. The readings on the scale must be clearly visible and they must match the values in Table 3. Your photo must also include your handwritten name in the background. Submissions that include a response to this question that do not utilize data from Table 1 above will be rejected.

Results and Discussion

  1. Use the measured dimensions of the 250 g mass to calculate the volume of the mass based on its shape. Note, you will use a different equation for a hexagonal mass set than you would for a cylindrical set. Show your work. V=Pier^2h, V=3.141.5^25.0, V=35.34cm.
  2. Use the value of the buoyant force you observed in Table 3 to calculate an experimental value of the volume of the 250 gram mass. Report this value in units of kg/m^3 (Fb = ρLVD g). The data used must correlate to those used in Table 3. Show your work. Fb=(Pl)(Vd)(g), Fb=0.20269.8, Fb=50.96kg/m^3.
  3. Determine the percent difference between the measured volume of the 250 g mass from Question 1 to the value calculated in Question 2. Show your work. Click here to enter text.
  4. Using the fact that 1 mL of water = 1 x 10-6^ m^3 , compare the volume of the displaced water to the calculated volume of the mass from Question 1 with a percent difference calculation. Show your work. Click here to enter text.
  5. Use the experimental weight and volume of the rubber stopper to calculate the density of the stopper in kg/m^3 using the equation ρ = m/v. Show your work. Click here to enter text.
  6. Research the density of your rubber stopper online. What density value, in kg/m^3 , did you find? How does it compare to your calculated value from Question 5? Click here to enter text.