A new method of measuring gravitational acceleration in an undergraduate laboratory program

Wang, Qiaochu; Chang, Wang; Xiao, Yunhuan; Schulte, Jürgen; Shi, Quan

doi:10.1088/1361-6404/aa83d5

Cited by 3 publications

(3 citation statements)

References 5 publications

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“…There are several experiments that can be used to determine the value of the Earth's gravitational acceleration. Example: Simple Classical pendulum, A rotating water column, and the establishment of the focal length of the resulting inner column water paraboloid, and Atwood's machine [2,3]. However, the current balance is used because this equipment is still relatively new in determining the value of the Earth's gravitational acceleration in the laboratory (gLab).…”

Section: Methodsmentioning

confidence: 99%

“…Gravity can explain the phenomenon of weight, the acceleration of objects falling from the orbit of Earth's satellite [1]. One of the basic parameters attached to the Earth is the acceleration due to gravity, which is closely related to everyday life [2]. Acceleration due to the gravity of the Earth is the acceleration of a body caused by the gravitational field acting on the body towards the center of the Earth [3].…”

Section: Introductionmentioning

confidence: 99%

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The Magnetic Properties Measurement of Coil for Gravitational Acceleration Determination

Salawane

Supriyadi

Talapessy

et al. 2020

SPEKTRA

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The value of the gravitational acceleration of the earth above the earth’s surface depends on the position of the latitude and longitude of the earth’s surface, in other words, because the shape of the earth’s surface is not round like a ball. The magnitude of gravity is not the same everywhere on the surface of the earth. The purpose of this study is to analyze the value of the earth’s gravitational acceleration in a laboratory using a current balance with a graphical method. Fluctuations in the value of the magnetic field strength (B) and the value of the electric current strength (i) on the current balance cause the value of laboratory gravitational acceleration (glab) to vary in the transfer of electric charge (q) according to coil type. The magnitude of the earth’s gravitational acceleration value obtained in a laboratory with a current balance for each type of coil is as follows: SF-37 glab-nr=9.89 m/s2, SF-38 glab-nr=9.90 m/s2, SF-39 glab-nr=9.76 m/s2, SF-40 glab-nr=9.95 m/s2, SF-41 glab-nr=9.75 m/s2 dan SF-42 glab-nr=9.93 m/s2. The results obtained indicate that the value of the earth’s gravitational acceleration in a laboratory close to the literature value is the value of the glab-nr in the SF-37 coil type of 9.89 m/s2.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The Magnetic Properties Measurement of Coil for Gravitational Acceleration Determination

Salawane

Supriyadi

Talapessy

et al. 2020

SPEKTRA

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“…In many free fall experiments, air resistance is neglected. Weight-based experiments have very poor accuracy due to the limited precision of force meters and force sensors [19].…”

Section: Introductionmentioning

confidence: 99%

Development of gravitational acceleration measurement set up based on laser beams

Das¹,

Das²,

Ghodke³

et al. 2021

AJCT

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In this paper, using three parallel laser beams system we have calculated the value of gravitational acceleration (g) by deriving a simple equation, where there is no velocity term, is reported. The numerator of the equation is always positive irrespective of distances. The setup consists of commonly available three red laser light-emitting diodes and three sensors using very common fast transistors. A free-fall object intercepts the laser beams to produce three voltage pulses across the collector-emitters of three transistors. These voltage pulses are fed to a storage oscilloscope for measuring the two time-intervals between two subsequent gaps of three laser beams with millisecond resolutions. Time intervals are also measured by two-microsecond timers in microsecond resolution. The object may fall from any height above first laser beam, but the 'g' calculated remains the same. Measurements were done by letting an object fall from two different heights, six times from each height, and the average value of 'g' of 9.8036916315 meters per second squared is calculated using the data of two-microsecond timers, which has a 0.03% deviation from the standard value of 9.80665 meters per second squared. Results obtained using microsecond timers are more accurate than that obtained using oscilloscope millisecond data.

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Measurement of gravitational acceleration using Arduino and rotating fluid

Mataubenu¹,

Boimau²,

Benu³

et al. 2022

Proceeding of the 1st International Conference on Standardization and Metrology (Iconstam) 2021

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A new method of measuring gravitational acceleration in an undergraduate laboratory program

Cited by 3 publications

References 5 publications

The Magnetic Properties Measurement of Coil for Gravitational Acceleration Determination

The Magnetic Properties Measurement of Coil for Gravitational Acceleration Determination

Development of gravitational acceleration measurement set up based on laser beams

Measurement of gravitational acceleration using Arduino and rotating fluid

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