Differences

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--- motors [2022/10/20 23:11] – [Power] jhagstrand
+++ motors [2023/04/02 12:13] (current) – [Resistance, Resistivity, Electromagnet] jhagstrand
@@ Line 127: / Line 127: @@
 So to measure the force, we must measure the acceleration.
+=== Force of Gravity ====
 The acceleration due to gravity is 9.8 Newtons.
@@ Line 145: / Line 146: @@
 A foot-pound of force means moving a 1 pound mass through a distance of one foot.
+=== How to measure torque ===
+=== Stall Torque ===
 Attach a one-meter arm to a motor's drive shaft,
@@ Line 155: / Line 162: @@
 power vs force: HP, Watts, Nm/s
+What about the weight of the arm?
+=== Output Watts ===
+speed and torque
 === Watts to Torque conversion ===
@@ Line 464: / Line 479: @@
+==== Resistance, Resistivity, Electromagnet ====
+\begin{align}
+R &= ρ × \frac{L}{A} \\
+\text{where:}\\
+R &= \text{resistance in Ω} \\
+ρ &= \text{resistivity of material in Ωm }\\
+L &= \text{length of the wire in m} \\
+A &= \text{cross-sectional area of the wire in m}^{2} \\
+\end{align}
+source
+https://www.omnicalculator.com/physics/wire-resistance#conductance-formula-and-resistance-formula