A horizontal turntable is a disk free to rotate frictionlessly around its centra

Question

A horizontal turntable is a disk free to rotate frictionlessly around its central axis. Initially it is at rest, and a coin is resting on it at position A (a distance rA from the axis), as shown here. Then a constant torque, tau , is applied to the turn-table (around its central axis) for a certain time interval, delta t. At end of delta t, the torque ceases. At that very same moment (the end of delta t), the coin slips and begins to slide across the surface of the turntable. It stops slipping at position B (a radial distance d from A), as shown, because it encounters an obstruction in the turntable surface. The mass of the coin is m. The moment of inertia of the turntable (without the coin), around its central axis, is I. After the coin has arrived at position B (after it has stopped slipping), the friction force on the coin is half the maximum possible. Find die steady force magnitude exerted by the obstruction on the coin after it has arrived at position B (after it has stopped slipping). You may consider these values as known: rA, tau , delta t, d, m, I, g. This is an ODAVEST item-use the full seven-step problem-solving protocol-but keep in mind that you're not being asked to actually solve for the final expression. In fact, you're not being asked to do any math at all-not even any algebra. Rather, for the Solve step, you are to write a series of succinct instructions on how to solve this problem. Pretend that your instructions will be given to someone who knows math but not physics. And for the Test step, you should consider the sihiation and predict how the solution would change if the data were different-changing one data value at a time.

Explanation / Answer

try to post one question at a time so that we can work it out accordingly. such a long question cannot be answered.

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