User manual CASIO EA-200

[. . . ] EA-200 User's Guide E http://world. casio. com/edu_e/ GUIDELINES LAID DOWN BY FCC RULES FOR USE OF THE UNIT IN THE U. S. A. (not applicable to other areas). Important!Please keep your manual and all information handy for future reference. NOTICE This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. [. . . ] Using E-CON m"E-CON"w1(SETUP)b(Wizard)w 1(CASIO)d(Light) 0. 01w255w1(YES) Using a Calculator Program Find the applicable program in the Program Library (P. 2-16-1), input it into your calculator, and then run it. ) u Determine the period from graphs of the measurement results obtained at each measurement position. 1 Weight Position of Equilibrium 2 Hand 3 Amplitude: 3cm u Move the optical probe from position A to position B or C, and then repeat the measurement operation. L : Light Intensity t(s) : Time T(s) : Period 1 Weight Position of Equilibrium 2 Flashlight 3 Weight Movement 4 Optical Probe 5 Distance Between A and B: 1cm 6 Distance Between A and C: 3cm Other Things To Do 55555555555555555555555 5555555 5555555 20020601 u Find out how the period changes when you change the length of the pendulum. u Find out how the period changes when you change the mass of the weight. u Find out how the period changes when you change the size of the weight. u Find out how the period changes when you change the amplitude. u Determine the period from the graph of measurement results, and compare this with the calculated value. u Find out what happens when you use an iron or magnetic weight with a magnetic sheet under the weight. u Consider why the period changes under the conditions described above. 5555555555555555555555 2-3-1 Conservation of Momentum The purpose of this activity is to investigate the law of conservation of momentum through the collision of two carts. English Activity: Setup í Equipment Two carts of identical mass String Pulley with a bracket to secure it Velcro 500g weight Cushion Distance Measurement Setup (EA-200, graphic scientific calculator, data communication cable, optional EA-2*1) Theory Collisions can take on many different forms, and can involve automobiles, locomotives, shopping carts, or even two people. The force of the impact when the two objects collide depends not only on their velocities but also their respective masses (weight), and you can calculate the momentum of an object by multiplying its mass by its velocity. Despite the variables involved, one principle always holds true ­ if external forces such as friction are ignored, the sum of the momenta of two objects prior to collision is the same as the sum of the momenta of the objects after collision. This is the principle known as the "conservation of momentum. " This principle is an excellent tool for understanding the dynamics of collisions. The following expresses conservation of momentum in the case of a stationary cart being struck by another cart, after which the two carts adhere to each other and continue in motion together. í Preparing the Carts u Measure the masses of Cart 1 and Cart 2. u Affix Velcro to the impact surfaces of Cart 1 and Cart 2. u Use tape to securely affix the string to the center of the front end (the same end where the Velcro is affixed) of Cart 1. 1 Back of Cart 1 2 String 3 Velcro í Setting Up u Align the EA-2, Cart 1, Cart 2 and the pulley in a straight line. u Run the string under Cart 2 and place it onto the pulley. Attach the weight to the end of the string. u Support the weight with your hand so it does not pull Cart 1. 1 Cart 1 2 Cart 2 3 Pulley 4 500g weight 5 String 6 Cushions 8 Allow 60cm 9 Distance: 50cm 0 Height of weight m1v1 = (m1 + m2)v2 m1(kg) : Mass of Cart 1 m2(kg) : Mass of Cart 2 v1(m/s) : Velocity of Cart 1 Before Collision v2(m/s) : Velocity of Two Carts After Collision *1 from floor: 30cm !Desk @ Floor # Velcro 7 EA-2 (SONIC) $ EA-200 This means that when the two carts are of identical mass, the combined velocity of the two carts after collision is one half that of the velocity of Cart 1 before the collision. between EA-2 and Cart 1. The above expression can be used to obtain the post-collision velocity of two carts (while they adhere to each other) of different masses. *1 When using the EA-200 in combination with the optional ``Motion Sensor (EA-2) ", be sure to power the EA-200 using its bundled AC adaptor (AD-A60024). 20020601 2-3-2 English Activity: Operating the Equipment í Measuring Data u Prepare the Distance Measurement Setup. Immediately after starting the measurement operation, allow the weight to drop. 1 Hand 2 500g weight 3 Floor 4 String 5 Pulley Measurement í Calculator Operation u Find the applicable program in the Program Library (P. 2-16-1), input it into your calculator, and then run it. u Display graphs for the distance traveled, velocity, and acceleration of Cart 1. L(m) : Cart 1 Distance Traveled v(m/s) : Cart 1 Velocity a(m/s2) : Cart 1 Acceleration t(s) : Time u Be ready to catch the carts with your hands if the cushion does not stop them. u Compare calculated theoretical velocity values with your measured velocity. Other Things To Do 55555555555555555555555 55555 20020601 5555555555555555555555 55555 u Think about why Cart 1 Acceleration never registers a value of zero. u Add weight to Cart 1 and Cart 2 to change their masses and find out how this affects velocity. u Think about what would happen if we replaced the Velcro with a spring. 2-4-1 Charles' Law This activity is designed to confirm Charles' law through an actual experiment. English Activity: Setup í Equipment Syringe (with scale markings) Plastic Container Rubber Tube Rubber Gasket Clip Mixing Stick Warm Water, Cold Water, Ice Temperature Measurement Setup (EA-200, graphic scientific calculator, data communication cable, temperature probe) Theory Increasing the temperature of a gas causes the molecules that make up the gas move faster. The pressure within the container that holds the gas is determined by the number of collisions between the molecules and the walls of the container, and by the velocity of the molecules when they collide with the walls. If pressure remains constant and temperature increases, the gas expands, which reduces the number of molecular impacts with the container walls and negates the increase in molecular velocity. Charles' Law states that the thermal expansion of rarified gas of constant pressure is proportional to the increase in temperature, and is represented by the expression shown below. [. . . ] 1 to 65535 Number of output data elements (*1) 0 *1 2 None d/dt d/dt, d2/dt2 ­­­ ­­­ Data string 0 to 255 Output data element value ­­­ ­­­ *0 None 10 FFT-Real 11 FFT-Real, Imaginary Data Output Selection *0 Data string 1 2 3 10 Channel 1 Channel 2 Channel 3 Microphone 1 to 14 (*6) Data string ± 1. 5 Samples used 2n (2-16384) Output data element value · Channel = 1, 2, 3 or 4, Operation = 5, 6, 11 { 1, Channel, Operation, Pin No, Trigger Threshold, Trigger Edge } Pin No *2 1pin Vin (± 10V) Trigger Threshold ± 10 Set input voltage threshold value ­10 to +10. Trigger Edge (Operation = 5, 6) *0 Rising edge to rising edge 1 Falling edge to falling edge 2 Rising edge to falling edge 3 Falling edge to rising edge Trigger Edge (Operation = 11) *0 1 2 20020701 20020601 10 6pin Vin-low (0-5V) 0 to 5 Rising edge Falling edge Rising and falling edge · Record Time for Operations 5, 6, and 11 must be 2, 1, and 1 respectively. · Trigger Source for Channels 1, 2, 3, and 4 must be 2, 3, 4, and 12 respectively. · Clock Source must be 10. -1-2 English Command 3 - Sample and Trigger Setup { 3, Sample Interval, Number of Samples, Record Time, Trigger Source, Trigger Threshold, Trigger Edge, Clock Source } Sample Interval 0. 00002 to 16000 (*0. 1) Number of seconds Number of Samples 1 to 120000 (*100) Number of samples Record Time 0 *1 2 Off Absolute time recording Relative time recording Trigger Souce 1 2 or 5 3 or 6 4 or 7 8 9 10 [START/STOP] key CH 1 CH 2 CH 3 DIG IN Clock DIG IN 8bit data Microphone Trigger Threshold ­­­ Sampled Values · Corrected values when Command 4 ­­­ 0-255 (D7-D0) (*1) Sampled Values ±1. 5V Trigger Edge 0 *1 2 ­­­ Falling edge Rising edge Rising and falling edge Clock Source *0 10 Timer (Sample interval) Same as Trigger Source ­­­ 0 *1 2 0 1 *2 3 Fallig edge Rising edge Rising and falling edge Falling edge Rising edge Difference with previous value is below Difference with previous value is above ­­­ ­­­ 11 SONIC Distance · Unit depends on Command 1. 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