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Graphing Calculator Tips - Periodic Motion
Use the graphing calculator to study how the centripetal force varies with changes in the speed with which the object is swung in a horizontal circle, the mass of the object, or the radius of the horizontal circle.
- How the magnitude of the centripetal force varies with speed:
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In the formula for centripetal force, the force is dependent upon the speed of the object.
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- The independent variable is the speed v; the dependent variable is the force F.
- The formula can be written for the graphing calculator and entered into "y1="
- y = (m * x2) / r
- Substitute numerical values for the radius r and the mass m. Graph the function. Use the trace key to determine the value of the force (y) for various values of the speed (x).
- How the magnitude of the centripetal force varies with mass:
- In this case, the independent variable is the mass (m).
- The formula can be written for the graphing calculator and entered into "y1="
- y = (x * v2) / r
- Substitute numerical values for the radius r and the speed v. Graph the function. Use the trace key to determine the value of the force (y) for various values of the mass (x).
- How the magnitude of the centripetal force varies with radius:
- In this case, the independent variable is the radius (r).
- The formula can be written for the graphing calculator and entered into "y1="
- y = (m * v2) / x
- Substitute numerical values for the speed v and the mass m. Graph the function. Use the trace key to determine the value of the force (y) for various values of the radius (x).