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I've made a MathCad template and the answer is correct when I don't include units, but when I include units the answer is incorrect. Also the units that get returned are not what they are supposed to be.
Thanks!
Solved! Go to Solution.
@Johnruehlz wrote:
Can you explain how you go the answer to change the units? Sorry VERY new to this.
Without seeing what you're doing, we can only guess.
If you have an emperical equation with a "constant" in it (old engineering Handbooks were great at this) there's a chance that that constant is really a unit conversion factor. Since Mathcad is "unit aware," it will translate units for you, so to calculate power (in watts, kilowatts, or horsepower, or any other unit of your choice) you multiply torque times angular velocity, and Mathcad takes care of the unit conversion for you. (No P = T w/5252 because T is ft lbf and w is rpm.)
The other possibilities include:
If you zip your file, you can attach it. That gives the rest of the world a chance. . .
I tried to include before but, couldn't figure how. Here it is
I think your units are okay, but you're calculating energy/area. Why a factor of 3?
Attached
Factor of 3 is because the area of arc is not uniform since it is in an enclosure.
@Johnruehlz wrote:
I tried to include before but, couldn't figure how. Here it is
Sorry! May be I do not understand some one!
The units should be cal/cm^2. I don't understand either why it is giving the wrong answer with units and the right answer without.
The correct answer should be 21.096 cal/cm^2
And that's the answer you get! See amended attached!
Can you explain how you go the answer to change the units? Sorry VERY new to this.
@Johnruehlz wrote:
Can you explain how you go the answer to change the units? Sorry VERY new to this.
Thanks Val!!
Huh. I must of been doing something wrong I tryed that a million times but, this time it worked. Thanks both of you for the help!