Instruction Manual Manual No. 012-08295A Energy-Transfer Friction Model No.
Energy-Transfer Friction Model No. ET-8770 Table of Contents Equipment List........................................................ 3-4 Introduction ............................................................. 5 Equipment Setup ..................................................... 5-7 Suggested Experiment .................................................. 8 Experiment 1: Using Friction to Heat a Cylinder ...................................................................... 8-9 Sample Data/Results......
Model No. ET-8770 Energy Transfer - Friction Energy Transfer Friction Model No. ET-8770 Equipment List 2 3 1 5 4 Included Equipment Replacement Model Number* 1. Base, 29 kg, 15.2 cm 648-08275 2. Cable Assembly 514-08366 3. Braided Cord, #18 yellow, 240 feet 699-067 4. Brass Thermal Conductor, 10 g 648-08277 5. Aluminum Thermal Conductor, 4 g 648-08276 6. Plastic bolt, 1 g 613-094 *Use Replacement Model Numbers to expedite replacement orders.
Energy Transfer - Friction Model No. ET-8770 Additional Equipment Required Temperature Sensor or Thermistor Sensor or Ohmmeter/Multimeter C-Clamp A computer PS-2517* or PS-2125* or PS-2134* or CI-6527A** SE-7285 or SE-7286 NA *PASCO’s PASPORT sensors (with PS- prefix) require a PASPORT interface for operation. **PASCO’s ScienceWorkshop sensors (with CI-prefix) require a ScienceWorkshop interface for operation.
Model No. ET-8770 Energy Transfer - Friction Introduction The Energy Transfer - Friction (ET-8770) apparatus is for demonstrating frictional heating. With DataStudio software and a Force and Rotary Motion Sensor, real-time computer measurement of this frictional work can be observed. The apparatus includes a friction base, which was specifically designed for the attachment of a conductive cylinder, thermistor, Temperature Sensor or ohmmeter, and a Rotary Motion Sensor.
Energy Transfer - Friction 6. Loosen the knobs on the banana jacks and insert the stripped portion of the wire in the holes under the jacks. (Note: Do not kink the wires. (Figure 1).) Screw the knobs on the banana jacks to hold the wires in place. Do not overtighten. Model No. ET-8770 Pulley Rotary Motion Sensor jacks Attachment Screws Figure 2: Setup with Rotary Motion Sensor 7. With the cable assembly, connect a Temperature Sensor (or Thermistor Sensor or ohmmeter) to the thermistor jacks.
Model No. ET-8770 Energy Transfer - Friction 12. In DataStudio, set up your experiment. (For instructions, see appendices B and C of this manual). 13. In DataStudio, click the Start button to begin collecting data. Note: If using an ohmmeter, use the conversion chart on the front of the friction base to find the temperature Figure 4: Complete Setup change. (If the resistance reading is outside the range on the friction base, see the conversion chart in Appendix A).
Energy Transfer - Friction Model No.
Model No. ET-8770 Energy Transfer - Friction 5. Hang a large enough mass (around 200g) from the pulley, so that when the cord is pulled back, the Force Sensor moves back torwards the cylinder. If the mass is too big, you will overshoot the sensor’s measurement range when you pull. In DataStudio, watch the small Force vs. Time graph as you pull. Adjust the hanging mass so that the force doesn’t exceed 50 N. 6.
Energy Transfer - Friction Model No. ET-8770 Sample Data/Results Appendix A: Resistance-to-Temperature Conversion Table Resistance (Ohms) 5,776 5,546 5,326 5,118 4,918 4,726 4,544 4,368 4,202 4,042 Temperature (Celsius) 38 39 40 41 42 43 44 45 46 47 Resistance (Ohms) 3,888 3,742 3,602 3,468 3,340 3,216 3,098 2,986 2,878 2,774 Temperature (Celsius) 48 49 50 51 52 53 54 55 56 57 Note: The front of the friction base includes a printed table of resistance-totemperature conversions (from 15°C to 37°C).
Model No. ET-8770 Energy Transfer - Friction Appendix B: DataStudio Setup Instructions The instructions below outline the recommended experiment setup for PASPORT and ScienceWorkshop sensors. Follow the steps specific for the type of sensor and interface (i.e. PASPORT or ScienceWorkshop). (For a setup example, see “Sample Data” in this manual.) Procedure Steps PART I: Plug the sensors into the interface: PASPORT: a) Plug the Force, Rotary Motion, and Temperature Sensors into a PASPORT interface.
Energy Transfer - Friction Model No. ET-8770 Appendix C: Creating Equations in DataStudio Step 2: Type in and/or build the equation. (Use the Scientific, Statistical, and Special menus, and the trigonometric functions to build the equation.) Click the Accept button. Step 3: Define the dependent variables. Under “Variables,” use the down arrow to select a variable or constant, etc. and click OK. (Example: For “T,” select “Data Measurement.” In the pop-up, select “Temperature,” and click OK.
Model No. ET-8770 Energy Transfer - Friction Appendix D: Technical Support For assistance with the Energy-Transfer Friction Apparatus (ET-8770) or any other PASCO products, contact PASCO as follows: Address: PASCO scientific 10101 Foothills Blvd. Roseville, CA 95747-7100 Phone: (916) 786-3800 FAX: (916) 786-3292 Web: www.pasco.com Email: techsupp@pasco.
