Help about physic | Mathematics | Page 1

pure plume Oct 24, 2023, 12:08 AM

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Calculate the value of 𝒓 when the penny is at the top of the circle

weary spruceBOT Oct 24, 2023, 12:08 AM

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pure plume Calculate the value of 𝒓 when the penny is at the top of the circle

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magic sapphire Oct 24, 2023, 2:02 AM

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@pure plume What is the forces acting on the penny?

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Draw them at a random instance

pure plume Oct 24, 2023, 2:21 AM

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it should just be tension and gravity

magic sapphire Oct 24, 2023, 3:38 AM

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Tension on the penny?

magic sapphire Oct 24, 2023, 3:39 PM

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The forces are gravity which is always vertical, centripetal from the contact with the cup and centrifugal. The last two are radial one looks inwards and the other outwards like this

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