Science, asked by himanshurad4405, 1 year ago

What motion exhibited by the marble?

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Answered by janvi2255
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Peers’s latest work sets out to explore the movement of a line freed from the earth, travelling in space like an air current, weightless and uninhibited … Smooth unbroken forms loop through space and hang in the air as if suspended by magic.” Peter Stiles

John Martin Gallery 38 Albemarle Street, London W1S 4JG

All of the work is presented on our ‘Freestanding’page, and a catalogue is available to download here.Please visit our Philosophy page for more background to the exhibition.


Anonymous: hiii
Answered by Anonymous
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The principles of the mechanics of motion are introduced in the Physics curriculum in Key stage 4 in terms of the interchange between kinetic and potential energy and forces. This is further enlarged upon in Key stage 5 where Simple Harmonic Motion is discussed. A Mathematical treatment is introduced in the study of mechanics at Key stage 5, with motion in a horizontal and then vertical circle being covered in later mechanics modules.
There are many aspects of mechanics that initially appear counter intuitive; an example is that two bodies of the same size and shape but different masses will, when released fro the same height, hit the ground simultaneously. Similarly, the idea that horizontal and vertical velocities of a projectile may be analysed independently is not one which comes without some thought. However, this concept is an excellent demonstration of the idea of velocity as a vector.
The explanation of many of these principles may be assisted considerably by a practical demonstration using of a simple marble run. It has the great advantage of being familiar, but able to exhibit physical principles on a wide variety of levels. By adding measurement tools, the mathematics underpinning the physics may be demonstrated in a very powerful way linking back to the original insights of mathematical scientists such as Isaac Newton.

The Marble Run

The marble run comprises a flexible, plastic track built from two parallel rails, much like a railway. These can be joined easily and, with a wide variety of supports, structures resembling roller coasters can be built. The ‘cars’ are marbles, either steel or plastic which are useful as they have different masses.

Acceleration Under Gravity

This can be demonstrated using a slope of constant angle and releasing marbles from different heights. It becomes apparent that marbles released from a greater height attain a higher speed at the bottom of the slope, but that speed at the bottom is not linearly related to the release height. Using light gates at the bottom of the run, it will be possible to measure speed and relate it to release height. This will also provide an opportunity to discuss the effects of friction.
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