S. FLUIDs 5.2 Buoyancy Buoyancy is defined as the ablity or tendency to float in
ID: 1782987 • Letter: S
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S. FLUIDs 5.2 Buoyancy Buoyancy is defined as the ablity or tendency to float in ater or air or some other fluld. In this part of the lab, we weinl be looking at this principle 1. What is the formula for buoyancy and what quantities does it depend on? Make sure to indicate whether your quantities are for the fald, or the object being submerged in the huld 2. What are the units of Buoyancyt Given these units, what physics concepts from earlier in the course will be most relevant in analyzing buoyancy? Figure 5.2: Mass Attached to a Spring Scale Next, your group should obtain a 20 Newton Spring Scale, and two masses one with a mass of 500 grams and one with a mass of 1000 grams. As background, a spring scale works in the same way that a regular scale does. When a weight is attached to it, its spring stretches and the scale displays the weight of the attached object. 3. Take the 500 gram mass and the 1000 gram mass and weigh them on the spring scale. Because the spring scales may not be totally accurate, record the reading on the scale for both masses below 4. Now that we have baseline values for the weights of our masses, we will first try to guess what will happen when we submerge them underwater. If we were to fully submerge each mass underwater while it was attached to the spring scale, would the reading on the spring scale be less than, equal to, or greater than the value when the mass was unsubmerged? Briefly explain your reasoning 5. Now take the 500 gram mass (Do not do the 1000 gram mass just yet) while it is attached to the spring scale and fully submerge the mass underwater. What is the reading on the spring scale? Was your guess correct? 128Explanation / Answer
1)
Buoyancy force is upward force acting on the object by the liquid when it is submereged in the fluid.
FB = (density of the fluid ) V g
Here V is the volume of the displaced liquid and g is acceleration due to gravity.
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