Excel spreedsheet for Range formula- Lab

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Homework Help Overview

The discussion revolves around programming the range formula for projectile motion into an Excel spreadsheet. The formula in question is R = [V0^2 * sin(2*theta)] / g, where participants are attempting to determine the angle theta that maximizes the range. The task involves creating a table with injection angles from 0 to 90 degrees in increments of 2 degrees.

Discussion Character

  • Exploratory, Assumption checking, Problem interpretation

Approaches and Questions Raised

  • Participants discuss how to set up the spreadsheet, including selecting a value for V0 and incrementing theta. There are attempts to program the range formula in Excel, with some participants expressing confusion over negative results and the need to convert degrees to radians for calculations.

Discussion Status

Some guidance has been provided regarding the setup of the spreadsheet and the importance of angle conversion. Participants are exploring different interpretations of the formula and its implementation in Excel, but there is no explicit consensus on the correct approach yet.

Contextual Notes

Participants are facing challenges with Excel, particularly with angle conversions and the resulting negative values in their calculations. There is a mention of a tutorial resource that may assist with the Excel functions needed.

brncsfns5621
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I have to program the range formula R= [Vo2sin(2*theta)]/g, into an Excel spredsheet. I need to progran the equation for various values of 'theta' to determine for which value(s) of 'thet' is the range maximum.

Table should have left side Injection angle (degrees), right side Range (R). The injection angle will go from 0 to 90 degrees in steps of two degrees.



Problem = I do not know Excel! Can someone help me on this?
 
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Well, first you need to pick a value for V_0. Then make the column theta start at some value, and increase 2 degrees in each row until you get to 90. In the next column, you simply type in the equation for range, with the parameters you know, making sure get excel to insert the value in the corresponding left column cell in place of the theta value.
 
Help

I tried this as well and am receiving a lot of negative numbers which can't be right.

V=10
G=10 m/s^2
In column A I numbered each row 0 to 90 increments of 2.

Then in column B programmed the following formula =10*2*SIN(2*A4)... A4 is the cell number value which = 4 in this case

Then the next row I had it take the value of B and divide it by 10^2 since G=10

Please advise
 
Physocs_n00b said:
I tried this as well and am receiving a lot of negative numbers which can't be right.

V=10
G=10 m/s^2
In column A I numbered each row 0 to 90 increments of 2.

Then in column B programmed the following formula =10*2*SIN(2*A4)... A4 is the cell number value which = 4 in this case

Then the next row I had it take the value of B and divide it by 10^2 since G=10

Please advise

Be careful!

Excel calculates angles in radians!

You must change to degrees first.. there is a function in excel that does this, but my the life of me I cannot remember :rolleyes:

1 sec .. .

//

Jerry Hester to the rescue once again (his tutorials really have been invaluable)
http://phoenix.phys.clemson.edu/tutorials/excel/trig.html
 
Last edited:
Okay that makes sense, but how do I do it when I have an equation such as
V02sin(2Theta)
 
Physocs_n00b said:
Okay that makes sense, but how do I do it when I have an equation such as
V02sin(2Theta)

Not 100% here, so you may want to check with a calculator .. .

V_o 2*\sin {(RADIANS(2*\theta))
 
now how do I apply inExcel??
 

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