I’ll upload my simple pendulum from my previous lab. Most the information included in my simple pendulum. Please read the all instructions clear then ask me if you any questions about it. It’s simple assignment.I’ll upload an example for this assignment. Also, I’ll provide also the pictures of my lab manual if needed.

These all the instructions please make sure you include everything in the instructions and please feel free to ask any questions about the assignment.

Basically you have to make a pendulum again like we did in the first lab. We attach a ball or something and record the trial 6 times. You have to use a different amount of string each time. Like in trial 1 u use 1m of string, then in 0.90m of string etc.

Then u enter the values into excel.

u record the time it takes the pendulum to move back and fourth 3 times (oscillations). you do that 6 times.

but each trial is done twice.

after we do all that time recordings we do the LINEST for our data like we did on the last 2 labs.

you also have to find the average, period, and period squared but that’s easy bc they tell u how to do it in canvas.

( exact the instructions):

You will use your simple pendulum from the previous lab. Or, if you wish, make a new simple pendulum with enough string so that you can vary the length at least 6 times. You will need a digital timer such as your phone.

Excel spreadsheet format (starting from A1 and through F1 for column labels):

Length Trial 1 Trial 2 Average Period Period-squared

1.Look over your experimental design. Make sure you can release the bob at an angle less than 10 degrees and at the SAME POINT each time.

2.Measure the length of the string from where it is tied and go down to the center of gravity of the bob. Record all the different lengths that you use starting in second cell of column A of your Excel Spreadsheet (Record in meters).

3.(IMPORTANT SPECIFIC INSTRUCTION FOR THIS LAB). For a given length, simultaneously release (ALWAYS from the same point) the bob and start the timer. Let it oscillate three complete oscillations. Place the amount of time it took to complete these three oscillations starting in the second cell of column B (cell B2). Repeat this timing event for this length and place that value in column C. Finally, in column D in cell 2, type (without the quotes), “=AVERAGE(B2:C2)”. So, you are timing the time it takes for three oscillations twice so you can take the average of these as your final value.

5.Repeat the process for at least 5 other lengths; placing the time for three oscillations (trial one) in column B and (trial 2) in column C. Go to cell D2 again and copy the formula down by clicking on the bottom-right corner and dragging it down. Now you have average values for three oscillation times down to cell D7 (a total of six different lengths).

6.In cell E2, type, “=(D2)/3”. This will give the time for ONE oscillation.

Recall the formula for the period of a simple pendulum:

??=2?????????

T

=

2

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L

g

Let us now linearize this:

??2=4??2????

T

2

=

4

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2

g

L

Accordingly,

?????2

Y

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T

2

?????

X

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L

slope = 4??2??

4

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2

g

7.In cell F2, type the equation “=E2^2”. Copy the formula down. This is your “Y” column. Here you are simply squaring the period.

8. Plot Y vs. X by clicking on column A (hold “shift”) and click column F. Just highlight the values in column A, hit shift, and then highlight the values in column F if it makes it easier. Insert graph and chose the appropriate xy-scatter plot showing your data. Label the graph.

9. Highlight a 2 x 5 matrix as you have done before. Run a LINEST with column F being the y-values, column A being the x-values. Click TRUE,TRUE naturally.

10. Call ???4??2??

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4

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2

g

. ????????????=4.02??2??

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i

d

e

a

l

=

4.02

s

2

m

. Report your ??

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value AND its uncertainty.

11. Save the file and upload.