Assignment: Buoyant Force and Archimedes Principle
PRE-LAB QUESTIONS
a. Draw a free body diagram of a hanging mass before it is submerged in water. Make sure to label your forces.
b. Draw a free body diagram of a hanging mass after it is submerged in water. Make sure to label your forces. Which force is the force you measure with the spring scale?
c. Apply Newton's second law to your free body diagram in Pre-Lab Question 2 to solve for the magnitude of the buoyant force.
EXPERIMENT: BUOYANT FORCE AND FLOATING
Data Sheet
Table 1. Number of Washers a Clay Boat Can Hold Before Sinking
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Type of Liquid
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Number of Washers
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Plain Water
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Salt Water
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Post-Lab Questions
a. What did you observe when you placed the ball of clay into the beaker?
b. What were characteristics of the boat design that floated the best? Explain why this works, and the clay ball fails to float using Archimedes' Principle.
c. How much water does an object have to displace before it will float?
d. If your clay boat weighs .005 kg and is floating, what is the upward force the water is exerting on the boat?
e. How could you improve your boat design to increase the buoyant force without using more clay?
f. In the second part of the experiment, does the boat hold more weight in the regular water or the salt mixture? What does this say about the relative densities of salt water and plain water?
Format your assignment according to the give formatting requirements:
a. The answer must be double spaced, typed, using Times New Roman font (size 12), with one-inch margins on all sides.
b. The response also includes a cover page containing the title of the assignment, the course title, the student's name, and the date. The cover page is not included in the required page length.
c. Also include a reference page. The references and Citations should follow APA format. The reference page is not included in the required page length.