AS3/ Expt-g/ Cookie

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AS3/ Expt-g/ Cookie

  1. 1. Measuring gravity
  2. 2. The equipment ---ticker timer(50hz) Figure 1.
  3. 3. <ul><li>Placed in square brackets at the level of seat table edge, RBI timer is fixed at the bottom of the stent, and in the vertical plane. Stent placed on a heavy base to keep the stand stable. Dot tape through the timer upper limit hole, and use clamps up, the bottom clip hanging by a heavy hammer, as Figure 1. </li></ul>method
  4. 4. <ul><li>Connected to the power supply, closed switch. RBI timer work to be stable, release the clip so that the above paper tape free-fall with a heavy hammer. Then the timer on the tape laid a series of points. Repeated experiments, the availability of several dot tape </li></ul>
  5. 5. Record the data in the following table V /t t /s v /ms-1
  6. 6. Calculate g using: Formula: v=at; a=v / t= gradient; t=1/50 V/ms-1 T / s V1 V2 T1 T2 V T
  7. 7. X1 X2 Calculate g using : formula: s=at^2; s=x2-x1;t=1/50 Note:Choose 2 displacements which are next to each other
  8. 8. <ul><ul><li>We can find the equipment in almost every physics lab. And this is a reliable method to work out the gravity~ </li></ul></ul>
  9. 9. <ul><li>Friction between paper tape and discharge needle </li></ul><ul><li>Use heavier hammer </li></ul><ul><li>Data processing tapes, dense-point difference between the displacement error of measurement up great and should be rounding; generally count as a 5-point point </li></ul><ul><li>Trace-point mapping, should be the maximum number of points, even in a straight line (or curve) can not be connected on-line point of separation line on both sides. </li></ul>possible error @solution
  10. 10. <ul><li>Thanks for watching </li></ul><ul><li><~~> :) </li></ul>

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