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by Procheta Mallik

Introduction

Making a ticker-timer itself is an amazing activity. Here we use one, made by our team, to conduct kinematics experiments and create histograms with the ticker-tape used.

    • Take care while using scissors, and be mindful of its sharp edges.

  1. Start by inserting the tape into the timer. To do this push one end of the strip through one of the slots on the timer. Then, pass it under the carbon paper and out the slot on the opposite side. To do this push one end of the strip through one of the slots on the timer. Then, pass it under the carbon paper and out the slot on the opposite side.
    • Start by inserting the tape into the timer.

    • To do this push one end of the strip through one of the slots on the timer. Then, pass it under the carbon paper and out the slot on the opposite side.

  2. Once you pass the tape edge through, hold that end. Now switch on the timer and pull the strip. The way you pull the strip will determine the speeds recorded, try pulling the tape through at a constant speed at first then varying speed. Now switch on the timer and pull the strip. The way you pull the strip will determine the speeds recorded, try pulling the tape through at a constant speed at first then varying speed.
    • Once you pass the tape edge through, hold that end.

    • Now switch on the timer and pull the strip. The way you pull the strip will determine the speeds recorded, try pulling the tape through at a constant speed at first then varying speed.

  3. Look at the dots on the strip and start from the point that the dots are far enough apart to count, from the side from which you started pulling the strip.  Then proceed to count off ten dots  (ticks), and draw a vertical line dividing the strip after the tenth tick. Repeat the process for the entire strip. Dividing it into sections of ten ticks each. Note, these sections can and will vary in length but they always need to contain ten ticks.
    • Look at the dots on the strip and start from the point that the dots are far enough apart to count, from the side from which you started pulling the strip. Then proceed to count off ten dots (ticks), and draw a vertical line dividing the strip after the tenth tick.

    • Repeat the process for the entire strip. Dividing it into sections of ten ticks each.

    • Note, these sections can and will vary in length but they always need to contain ten ticks.

    • Now cut the strip into ten-tick pieces based on your markings, also cut off any excess parts of the strip.

  4. Place the strips, chronologically, at equal space from each other and on the same baseline on a graph paper or any other lined paper This is then your distance-time graph The height of each strip is the actual distanced travelled in the time it takes the ticker-timer to make 10 dots, i.e. 0.2 seconds. Using this fact, you can calculate the speed of each of the strips and/or the acceleration between the strips.
    • Place the strips, chronologically, at equal space from each other and on the same baseline on a graph paper or any other lined paper

    • This is then your distance-time graph

    • The height of each strip is the actual distanced travelled in the time it takes the ticker-timer to make 10 dots, i.e. 0.2 seconds. Using this fact, you can calculate the speed of each of the strips and/or the acceleration between the strips.

Finish Line

Kailash NR

Member since: 05/02/2017

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