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Physics for Scientists and Engineers: Foundations and Connections
1st Edition
ISBN:9781133939146
Author:Katz, Debora M.
Publisher:Katz, Debora M.
Chapter15: Fluids
Section: Chapter Questions
Problem 1PQ
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What is the displacement (mm) of the dots ?

Displacement (mm)
Y1 =
Y2 = 
Y3 =
Y4 =
Y5 =
Y6= 
Y 7 =
Y 8 =
Y9 =
Y 10 =
Y 11 =
Y 12 =
Y 13 =
Y 14 =
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Transcribed Image Text:51 81 10 11 12 13 13 14 15 16 17 18 19 20 21 22 23 1 22 23 24 25 26 27 28 29 30 31 32 33 34 35
cricket
alll 90% 19:04 PM
Name
Physics 101-121 Lab #3
Uniformly Accelerated Motion
In this lab we will show that for an object in freefall, (ignoring air resistance) the
distance it travels is proportional to time squared. We will also determine the
constant acceleration due to gravity, g.
To do this, we will use a freefall apparatus consisting of a metal object allowed to
freely fall between two metal wires. The wires are connected to a device that
periodically produces a voltage spike at 60 Hz. This means that a high voltage
spike occurs 60 times per second. Every time that the voltage spike is applied, a
spark is generated across the wires through the metal object. A special paper tape is
placed between the two wires that records burn marks caused by the sparks as the
object falls to the ground. Adjacent burn marks are each separated by a time
interval of 1/60 of a second.
Procedure
1. The equipment will be run by the instructor producing a spark paper that
records the object's motion. You will be provided an image of the paper
with a ruler positioned to measure the burn marks distances from the 1st
small mark. The distance between successive marks should be gradually
increasing. Note: At the 1st small mark after the large spot at the beginning
(yo), the object was already moving with some velocity...we start here as
that is when the object is actually in freefall.
Spark Marks on Paper Tape
2. Using the ruler, measure the relative distance between the 1* small burn
mark, called yo, and each of the other marks and record these in the table to
the nearest millimeter (if it is right in between 2 millimeter mark, you can
round it to a ½ millimeter). That is, measure the distance between yo and yı,
then the distance between yo and y2, the distance between yo and y3, and so
forth.). These are noted in the table as displacements; Ayı, Ay2, etc. All
distances are measured relative to the 1st small burn mark at yo. (Use
positive values with the understanding the motion is downward.)
Transcribed Image Text:cricket alll 90% 19:04 PM Name Physics 101-121 Lab #3 Uniformly Accelerated Motion In this lab we will show that for an object in freefall, (ignoring air resistance) the distance it travels is proportional to time squared. We will also determine the constant acceleration due to gravity, g. To do this, we will use a freefall apparatus consisting of a metal object allowed to freely fall between two metal wires. The wires are connected to a device that periodically produces a voltage spike at 60 Hz. This means that a high voltage spike occurs 60 times per second. Every time that the voltage spike is applied, a spark is generated across the wires through the metal object. A special paper tape is placed between the two wires that records burn marks caused by the sparks as the object falls to the ground. Adjacent burn marks are each separated by a time interval of 1/60 of a second. Procedure 1. The equipment will be run by the instructor producing a spark paper that records the object's motion. You will be provided an image of the paper with a ruler positioned to measure the burn marks distances from the 1st small mark. The distance between successive marks should be gradually increasing. Note: At the 1st small mark after the large spot at the beginning (yo), the object was already moving with some velocity...we start here as that is when the object is actually in freefall. Spark Marks on Paper Tape 2. Using the ruler, measure the relative distance between the 1* small burn mark, called yo, and each of the other marks and record these in the table to the nearest millimeter (if it is right in between 2 millimeter mark, you can round it to a ½ millimeter). That is, measure the distance between yo and yı, then the distance between yo and y2, the distance between yo and y3, and so forth.). These are noted in the table as displacements; Ayı, Ay2, etc. All distances are measured relative to the 1st small burn mark at yo. (Use positive values with the understanding the motion is downward.)
Expert Solution
Step 1

We were asked to measure the displacements from the small burn mark or yo.

We measure the distances in mm.

The displacements are asked to be considered downward in a single direction, hence all will have positive values.

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