Hi there, II. Measuring Mass & Volume PROCEDURE For each object in your density

Question

Hi there,
II. Measuring Mass & Volume
PROCEDURE
For each object in your density set:
1. Find mass using balance (record results in table)
2. Find volume using vernier calipers.
Use the vernier calipers to measure the dimensions to at least the nearest 0.01 cm,
and calculate the volume recording your results below. Show your work on a
separate sheet of paper. If you are not sure how to read the calipers to this
precision, consult the instructor.
3. Find volume using overflow method
a. Measure the mass of the beakers and put it under the spout of the overflow can.
b. Use the bucket to fill the can with water until water comes out the spout. Pour
out the excess water from the beaker, dry it, and put it back under the spout.
c. Now immerse your first object in the overflow can. Reweigh the first beaker, with
the overflow water in it. Calculate the mass of water in the beaker, and from that
calculate the volume of water that overflowed. Repeat the procedure for the
other objects and record your results below.
to just to give you heads up .These are the requirements ,and i did all that but there are 4 questions i need the answer
questions

1 What are the advantages and disadvantages of finding volume by the overflow
method as compared to the geometric method? Which method do you think is more
accurate?
2 . Is there a significant difference between the volume measurements from the overflow
method and the volumes you calculated by geometric methods? If there is, what are
possible causes for differences?  
(i did find differences why is that ?

Explanation / Answer

Ans

a) Advantages

1) if object is of irregular shape then geometrical volume may be erratic and difficult to calculate.

2) Using vernier calliper or any other instrument for measuring dimensions of object will produce error due to least count and that error will be multiplied when calculating volume.

Disadvantages

1) in this while pouring out extra water from beaker, the overflow point may be missed.

2) After overflowing water may not get dried properly on beaker outer surface. When again immersing object in the beaker, the few water drops overflowed may get adsorbed on the outer surface of the beaker and we can have loss of some volume of water and therefore the volume of object will not be accurate.

3) it is little tedious than geometric method

b) when object is of regular shape then there will not be any significant difference between geometric and overflow method. But if object is of irregular shape then overflow method will give more accurate result.

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