Rain bird isa 300 400 series sprinkler timer manual. This is a video explaining data collection for the free fall lab used at finger lakes community college. Analysis of sources of error the percent error for my rate. A ticker timer, a 12v ac power supply, ticker tape, two 4mm connecting leads and a pair of scissors. The timer operates on 12 volts ac supply and produce 5060 dots per second depending on the main frequency. Label on each tape the height of you apparatus from top of incline to the table top. Place a piece of adding machine tape about 2 ft long in the timer. The purpose of this lab is to demonstrate the relationship between distance, velocity and time under uniform accelerated motion.
Nov 22, 2007 one problem will be the added mass and resistance of the ticker tape. Made a ramp, attached ticker tape to the end of a cart, thread the tape through the ticker timer, let the cart roll down the ramp. During the experiment there were difficulties that sometimes occurred with the ticker tape timer. Repeat the experiment at least three times, each time hanging another 100 g mass piece on the hook. To investigate the acceleration of a car rolling down a ramp. Ticker timer, complete with carbon disc ticker tape 2 x 1m lengths per student ac power supply and connecting wires.
It is supplied with one roll of 50 meter paper tape and carbon discs. Ticker tape lab answers b to create a position time graph from a velocity time graph find the average velocity of each interval. Repeat the experiment but this time pull the tape through the timer more quickly. Under accelerated motion, an object will cover the increasing amount of ground over the same period of time. Amazing experiment shows spherical version of tesseract duration. If your ticker tape is not gummed you will also need some glue. Carbon paper was attached to the ticker machine and ticker tape was fed through to the ticker machine. The ticker tape timer will place a dot every 60th of a second along a piece of ticker tape, as the tape passes through the timer. Analyse the ticker tape, calculate the acceleration and tabulate the results. What is the initial velocity and final velocity of each of the following ticker timer tapes. What are the functions of motion and acceleration in ticker tape diagrams.
Put a disc of carbon paper on the pin in the timer reuse them as much as you can. If this caused the distance between the dots to be shorter, then the velocity and acceleration would also be less than the accepted value, which is consistent with my results. What is the acceleration of the last two ticker timer tapes. Jan 20, 20 for the love of physics walter lewin may 16, 2011 duration. Ticker tape timer ticker tape slope should be as frictionless as possible. Mass must be kept constantrunway is sloped so that the cart moves with a constant velocity when given a gentle push.
Ignore about 5 cm at the start of the tape and begin marking off equal distances for equal time intervals. Attach the 250g mass to one end of the ticker tape. Thread a piece of tape through the slots on the timer. Sep 21, 2010 it was an experiment we did at school. Tam khiet nguyen 10sci1 ticker timer experiment aim. The ticker tape timer produces marks or dots at regular intervals on to its special tape that is sensitive to pressure. Switch the ticker timer on and allow the trolley to be pulled down the slope by the mass piece. What would be some sources of error while using a ticker. Click here to learn the basics of a ticker tape timer. Ticker timers vibrate at exactly 50 ticks per second 50 hertz or 50 hz. You can measure the distances between the dots to see how far the object traveled during each 0. The ticker tape timer works by making dots on a paper tape at equal time intervals. First you shall evaluate your consequence with the theoretical cost.
Connect the ticker timer to a lowvoltage power supply. Diagram above shows ticker tape chart that show the movement of the trolley. The ticker timer should be on its side overhanging the bench. Set up the timer and with it off, practice pulling the tape through the timer at a.
Ticker tape calculations might be hard but we are here to help. This ticker tape timer is housed in a tough molded plastic case. To use a ticker timer to measure and demonstrate both constant speed and acceleration. View the video tutorial to understand where to take time interval. Finding acceleration from a ticker tape chart example force and motion duration. So we chose a dot, and registered the length between the dot before it, and after it to calculate the velocity at that dot. The velocity of a section of ticker timer tape can be found by knowing the time and displacement and applying the formula. There are some obvious sources of errors in the tape part of the experiment.
This added mass and resistance will change with time as well, so it will be very difficult to compensate for. A typical ticker timer is plugged into a household outlet. From which you will deduce the proportion errors on your consequence, and right here comes the genuine stuff, you will could desire to seek for what brought about that errors. Low friction pulley at the end of the runwaynewton weights on the cart and on the scale pan.
Feed the ticker tape through the staples and over the carbon paper. Ticker timer, ticker tape, mass sets, meter stick, old physics text procedure. The purpose of this experiment is to determine the acceleration due to gravity. Kinematics is the science of describing the motion of objects. Tape a 1m length of ticker tape onto a 500g weight.
Rip a ticker tape 30 cm shorter than the distance from the timer to the ground. Ticker tap lab discussion questions schoolworkhelper. Ticker timer practical lesson period 3 thursday, 221009 line 1 11. A ticker timer consists of an electrical vibrator which vibrates 50 times per second. I mean that isnt that the ticker timer machine will also need 0. This experiment is to measure the distance traveled and the speed of a piece of ticker tape using a ticker timer.
Sometimes they are referred to as the kinematic equations. The case has a tape guide and a carbon disc plug which can be moved to maximize the use of the discs. Turn on the power so that the ticker timer is vibrating. It was cut through the middle of the first and then the sixth hole. Free fall lab north hunterdonvoorhees regional high. If the tickertape timer produced 50 dots per second, find the acceleration of the toy car. Label 2 tapes low height, 2 others medium height, at the last 2 high height. Calculating the acceleration of gravity using a ticker tape. A dot diagram sometimes called ticker tape diagrams or oil drop diagrams represents the position of an object at constant intervals of time like every second with a dot. Most high school students, and all science major college students especially we engineers have experienced them. Choose intervals so you have about 10 total and call each.
The pattern of dots reveals information about the nature of the motion. It consisted of a paper strip that ran through a machine called a stock ticker, which printed abbreviated company names as alphabetic symbols followed by numeric stock transaction price and volume information. A ramp was angled at 3 degrees and a ticker machine was attached at the higher end of the ramp. Ticker tape was the earliest electrical dedicated financial communications medium, transmitting stock price information over telegraph lines, in use from around 1870 through 1970. The distance that the tape has traveled in the time that you pulled it through the ticker timer is simply the distance between the first and last dots on the tape. It takes its timing from the mains frequency and therefore prints 50 dots per second.
Using this fact, you can calculate the speed of each of the strips andor the acceleration between the strips. A strip of adding machine paper tape is passed underneath the tip of a. The other side of the ticker tape was inserted through the ticker tape machine. Review this information with this quiz and worksheet. Advice although the equations are given in the exam, it saves time and boosts selfconfidence to memorise them. We might expect the answers to be exactly the same as the distance between each of the drops is the same indicating the velocity is constant. For the love of physics walter lewin may 16, 2011 duration. The line of dots on the tape is called a ticker tape diagram. The time interval between two adjacent dots on the ticker tape is called one tick. The tape timer is a special device that makes dots on a ticker tape every 0. Dec 06, 2015 on this page you can read or download ticker timer project in pdf format.
One side of the ticker tape was attached to the back of a participant. This enables it to make 50 dots per second on a ticker tape being pulled through it. The tickertape in figure above was produced by a toy car moving down a tilted runway. Ticker timer problems what is the average velocity of the. You will also be testing your ability to read a ticker tape diagram. What are precautions to take when doing a practical. The arm is vibrating regularly, making 50 dots per second. A ticker timer consists of a small electrical vibrator which vibrates at the frequency of 50 hz. The 14 cm length of the ticker tape was cut into four strips. Ticker timer problems what is the average velocity of the following ticker timer tapes. One means of describing a motion is through the use of a diagram.
One cart on the runway attached to a ticker timerscale pan hanging off the side of the table attached to the trolley by a string. Kinematics displacement, velocity, acceleration, 1. In the laboratory, a ticker timer as shown in figure 2. Ticker timer and tape ticker timer trolley trolley track string mass pieces method. What would be some sources of error while using a ticker tape. So the ticker cycle of the ticker timer is closely related to the frequency of the supplied household power. Nov 25, 2017 the height of each strip is the actual distanced travelled in the time it takes the ticker timer to make 10 dots, i. Tickertimer experiments speed tactivities thinktac. The pointed stylus located underneath the reed moves down to complete the electrical circuit every 160 of a second. If you continue browsing the site, you agree to the use of cookies on this website.
One cart on the runway attached to a ticker timer scale pan hanging off the side of the table attached to the trolley by a string. Oct 26, 2010 click here to learn the basics of a ticker tape timer. Finally, it is possible that the ticker tape timer was not precise in its tick timing, which wouldve led to an incorrect spacing between the dots. The time interval between two adjacent dots on the tickertape is called one tick. Use masking tape to tape the protruding craft stick tabs of the timer to the table. Miniature car ticker machine masking tape ticker tape carbon paper power supply ruler procedure. In this experiment, we are using a tape timer and a ticker tape as they will help us measure the gravity of earth or g which equals to 9. Year 10 science ticker tape experiment free download as word doc. The dots from the ticker timer will be consistent only if the tape is pulled through quickly but if the tape is pulled through the time ticker slowly, the dots will be inconsistent and close to each other. It is a device to record the movement of an object by taking a spot on a paper tape at regular time intervals. A tickertimer consists of an electrical vibrator which vibrates 50 times per second. This timer draws its inspiration from the pssc physics ticker tape. Materials ticker tape machine ticker tape tape ruler pencil graph paper carbon paper procedure a piece of ticker tape and a ticker tape machine were taken. Feb 08, 2015 physics ticker timer introduction mr sai mun.
Drop mass vertically aiming for the old text to avoid smashing linoleum stop ticker timer analysis. It allows us to measure precisely short intervals of time corresponding to short distances travelled. Since it produces a dot every 60th of a second, every 6 dots on the ticker tape represents 0. To analyse a ticker tape and calculate velocity equipment. The car bon paper is mounted on a small pin sticking up from the bottom plate, the timer is closed, and the experiment can proceed. Elevate one end of the bench and allow the trolley to accelerate down hill. Year 10 science ticker tape experiment nature scribd. Mark the tape from the first clear dot to the last clear dot every five time intervals which. In the laboratory, a tickertimer as shown in figure 2. The diagram shows a strip of paper tape that has been pulled under a vibrating arm by a car moving to the left. One problem will be the added mass and resistance of the ticker tape. The diagram below shows lengths of ticker tape from a timer in an experiment to. We placed a tape through a vibrator that leaves a black dot on a tape for every 1100 s. With the timer vibrating, set the vehicle in motion.
A tickertimer consists of a small electrical vibrator which vibrates at the frequency of 50 hz. They mark dots on a ticker tape which is attached to a moving object such as a trolley. This enables it to make 50 dots per second on a tickertape being pulled through it. The tape can drag a little as it runs through the printing head, slowing the speed of whatever is being measured.
Thread the timer tape through the timer and use masking tape to attach the ticker tape to the vehicle. The height of each strip is the actual distanced travelled in the time it takes the tickertimer to make 10 dots, i. To use a ticker timer to measure and demonstrate both constant speed. Use this information, your ruler and your calculator to calculate the initial velocity, the final velocity and the acceleration. If you dont see any interesting for you, use our search form on bottom v. Newtons second law of motion deals with unbalanced forces. What is the average velocity of the following ticker timer tapes. Adjust the angle of inclination of the runway until the trolley moves with. Since ticker timers make dots at a rate of 50 dots per second, each set of 5 dots takes 0.