write the report:
Lab2_Archimedes principle
Buoyant Force
Safety
Follow this important safety precaution in addition to your regular classroom procedures:
• Make necessary arrangements to your workstation to avoid getting water on any electronic equipment.
Procedure
Part1 —Cylinder
SET Up
1.	Fill the beaker 1-L with approximately 500 mL of water.
2.	Slowly fill the beaker with water until it reaches its maximum level.
3.	Use the meter stick to measure the length l and radius r of the used cylinder. Record the values for the cylinder.
4.	Measure and make small marks on the sides of both cylinders at ¼ L, ½ Land ¾ L locations.
5.	Assemble your equipment similar to the diagram at right:
•	Use the thread to hang the cylinder from the force sensor hook so that it hangs vertically with its top surface approximately 5 to 10 c:rn from the sensor.
•	Weigh the larger beaker while it is empty.
•	Place the beaker inside another container collect the water as it pours out.
6.	Connect the high resolution force sensor to the data collection system, and then create a digits display showing Force (Inverted) in newtons.
7.	Remove the cylinder from the force sensor hook, and then press the Zero button on the force sensor. Rehang the cylinder after the sensor is zeroed.
8.	Using the water, slowly fill the overflow can until water starts to pour from its spout into the second beaker. The water Will continue to drip into the beaker until it reaches the exact level of the spout inside the can.
9.	Once the overflow can has finished dripping, place it on the balance and deduce the mass of the water spout.
COLLECT DATA
1.	 Start recording data and observe the force measured by the force sensor, This measured force value is equal to the tension T in the string. Record the first tension value T1 of the suspended cylinder suspended above the water in the overflow can (corresponding to a Depth of 0 m}.
2.	Gently lower the cylinder into the water in the overflow can until the cylinder is submerged up to the first mark L/4.
3.	Once the overflow can has stopped dripping: record the new tension value T2 from the force sensor; and then place the beaker onto the balance and record the mass of the water that was displaced into the beaker.
4.	Repeat the previous steps three additional times, lowering the cylinder to depths of L/2. 3L/4. And L (cylinder completely submerged), Record the tension T_n measured by the force sensor and the total mass of the displaced water each time. NOTE: Each time the cylinder is lowered, be sure the overflow can has stopped dripping before recording any measurements.
5.	Stop recording data.
Data Analysis
Part 1 —Cylinder
1.	Calculate the following using the measured values for the cylinder- Record the results
a)	The depth in centimeters.
b)	The cross-sectional area A, in cm^2,
c)	c, The volume Of the cylinder submerged V_subm in cm^3 at each depth
Table 1: Buoyant force and displacement values for a brass cylinder submerged in a fluid
Depth
(cm)	V_subm (cm^3)	Tension (N)	M_disp (g)	F_b (N)	W_disp (N)
0			T_1				
¼ L			T_2				
½ L			T_3				
¾ L			T_4				
L			T_5				

2.	If the tension T_n, measured when each cylinder was submerged is equal to the difference between the gravitational force and the buoyant force:
T_n=F_R-F_b
and the tension T_1 measured when each cylinder suspended above the water is equal to the gravitational force:

T_1=F_R
then the buoyant force on each cylinder is equal to:
F_b=T_1-T_n
Based on this equation calculate the buoyant force Fb at each depth. Record the results.
3.	Plot a graph of buoyant force versus submerged volume.
4.	Based on your data, is it reasonable to assume that the relationship between buoyant force and submerged volume would be similar if you had used a third object with greater mass {greater density)? Explain your reasoning,
5.	5, Calculate the weight (in newtons) of the displaced fluid at each depth, Record your results.
6.	Plot a graph of buoyant force versus weight of displaced fluid.
7.	Based on your data, is it reasonable to assume that the relationship between buoyant force and the weight of the displaced fluid would be similar for a third object with greater mass (greater density)? Explain your reasoning,
Lab_report_structure
Title
Introduction: Be brief and state only what is relevant. DOWT COPY FROM THE LAB NOTES.
•	Present the purpose of the experiment.
•	Provide the context and motivation for the experiment
•	Briefly explain relevant theory in sufficient detail
•	Introduce any relevant laws, equations or theorems
•	Clearly state the aim or research question that the experiment is designed to address.
Experimental section {procedure, materials..)
•	Describe briefly the experimental set-up. Draw an image/ schematic representation /diagram.., showing the relevant features of any object or material under investigation, with each component clearly labelled
•	Present the steps used to collect the data
•	State any experimental difficulties encountered and how they were resolved or worked around (systematic error).
Results, Analysis and Discussion
•	Report your measurement appropriately,
•	Detail your calculation (main equations...)
•	Present your results in form of graphs. units, scales, titles...)
•	Analyze the errors or uncertainties and indicate how accurate your results are,
•	Identify any sources of experimental error
•	Explain any unexpected results
•	Comment, interpret the obtained result (You should clearly state how the results support or refute your initial hypotheses)
•	State the discrepancies between the experimental results and the theoretical model and discuss the sources of the differences in terms of the errors
•	Answer theoretical questions asked in the lab instruction.
Conclusion
•	Briefly restate the purpose of the experiment
•	Identify the main findings
•	Note the main limitations that are relevant to the interpretation of the results
•	Summarize what the experiment has contributed to your understanding of the problem
My results:
Container 30.2 g   beaker 42.4 g
Small cylinder d= 1.4 cm , L=4.4 , 80.7g
Big cylinder D=2.9 cm , L =3.5, 80.7g
“”1= -0.79 n
76-51=25”””
L=3.5 cm
At ¼ L submerged, t=0.72 N
At ½ L submerged, t=0.674 N
At ¼ L submerged, t=0.72 N
At ¾  L submerged, t=0.537 N

Starting weight =128g
L=3.5 cm
At ¼ L submerged, t=0.694 N
At ½ L submerged, t=0.655 N
At ¼ L submerged, t=0.557 N
At ¾  L submerged, t=0.502 N
Small cylinder starting weight=143.5 g
At full large beaker t=0.695 N       w=47.3 
Starting weight =100g+container weight