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A demonstrator and principle technology, applied in the field of physical experiments, can solve problems such as difficult operation, low accuracy of measurement results, inconvenient adjustment of overflow cup height, etc., and achieve good controllability and good observation effect
Pending Publication Date: 2019-05-03
CHINA WEST NORMAL UNIVERSITY
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But there are two deficiencies in this demonstration instrument. One is that the spring scale is used to measure the force, and the measurement accuracy is not high. The other is that the height adjustment of the overflow cup is very inconvenient. The number of height adjustments is limited, and it is difficult to operate.
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[0021] The technical solution of the present invention will be further described in detail below in conjunction with the accompanying drawings, but the protection scope of the present invention is not limited to the following description.
[0022] combine figure 1 , figure 2 , image 3 with Figure 4 Shown, the present invention comprises following structure:
[0023] An Archimedes principle demonstrator, the demonstrator includes a connector, the connector includes a water tank 1, a left pipe 2 and a right pipe 15, and two round holes are opened above the water tank 1 to connect with the left pipe 2 and the right pipe respectively. The tube 15 is connected, and the right tube 15 is provided with a scale 11 for directly reading the volume of the liquid; the top of the left tube 2 is provided with a digital push-pull dynamometer 7, and the lower end of the dynamometer 7 is connected to a Cylinder 4, cylinder 4 is provided with scale, and cylinder 4 is arranged in described...
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Abstract
The invention discloses a physical experiment device. An Archimedes principle demonstrator which can directly measure the buoyancy and the volume of an object immersed in water, further measure the gravity of the object with liquid displaced and complete an experiment related to the middle school physics buoyancy, mainly comprises a water tank, pigment water, a left pipe, a cylinder sample with scales, a connector, a left supporting plate, a digital push-pull dynamometer, a right pipe, a rotating hand wheel, a gear, a right supporting plate, a graduation ruler, a rack, a piston, a sealing ring, a supporting frame, a gear shaft and the like. The newly designed experiment device has high measurement accuracy, simple experimental operation, novel whole structure design, simple structure and easy to manufacture, material selection is convenient. In addition to Archimedes principle demonstration, the demonstrator can also measure the density of liquid, measure the density of solids, and explore the relation between the buoyancy and the immersion depth of the object in liquid.
Description
technical field [0001] The present invention relates to a field of physical experiments, in particular to a demonstrator of Archimedes' principle, Background technique [0002] In middle school physics, Archimedes' principle explores the quantitative relationship between the magnitude of buoyancy on an object and the gravity on which it displaces liquid. The experiments in the textbook need to use a spring dynamometer to measure the gravity on the object first, and then measure the force on the object after it is immersed in the liquid, and calculate the buoyancy on the object through the difference between the two. In the experiment, it is also necessary to use a spring dynamometer to measure the gravity of the keg, the total gravity of the keg and the liquid in the bucket, and calculate the force of the liquid displaced by the object immersed in the liquid by calculating the difference between the two. gravity. In the experiment, a lot of data needs to be measured and re...
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