The Acceleration of a Falling Body Introduction: When an object falls to earth n
ID: 3309071 • Letter: T
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The Acceleration of a Falling Body Introduction: When an object falls to earth near its surface it has an acceleration which is directed towards the center of the earth. If the object is heavy enough so that air friction can be neglected, its acceleration will be a constant g called the acceleration due to gravity. All objects for which air friction can be neglected will have the same value for g. This means that g is independent of the mass of the object. Acceleration can be defined in this experiment as the rate of change of velocity with respect to a change in distance The experimental equipment used in this experiment is a Behr free-fall apparatus and a high voltage sparker. A high voltage spark is produced every 1/40 of a second. This spark is and electrical discharge on the order of 10,000 volts. The equipment should be used only with the supervision of your lab instructor IS ON A metal cylinder is allowed to fall between two wires to which is attached a voltage sparker. At peak voltage, which occurs every 1/40 of a second, the cylinder promotes a short between the wires. This produces a spark at the position of the cylinder. A spark in turn leaves a mark on a waxed paper tape. The position of the cylinder in free fall is thus recorded every 1/40 second. Procedure A. The Behr freefall apparatus will be used to make a record of a falling cylinder on a strip of spark-recording tape. We will use the intervals between every-other spark burn on the tape. This improves the accuracy of the experiment. Do not use the interval between the start (initial) spark burn and the 1 spark burn as this particular time interval is not known. Beginning with the 1" spark burn (not the initial) measure the interval between the 1" and 3"d, between the 3"d and S, and so on. The time intervals that are used here are now 1/20 of a second Record these interval lengths in Table 1. B. as C. Calculate the average velocity over each interval,Explanation / Answer
1). The graph crossing the verticle axis signifies the initial velocity. It is not passing through the origin means it has a initial velocity.
2). For each measured value of displacement there is an error based on how accurately you have measured that point.
3). It will be straight line increasing with time. The intercept on the verticle axis represents the initial displacement.
4). In order to plot the graph your readings are not clear.
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