| 1. | The tangential force is opposite in direction to the external force, and therefore partially cancels it.
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| 2. | Forces involved are normally particle gravity and inter-particle contact forces including normal and tangential force.
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| 3. | This means that the axial and tangential forces that act on the blade vary with rotor speed.
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| 4. | The reason for this is that the normal force is the sum of the tangential force and centripetal force.
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| 5. | Current flowing radially outward along one side of the arrowhead and radially inward on the other produces the tangential force.
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| 6. | A tangential force of 100 pounds ( 400 N ) is sufficient to start the antenna rotating on the turntable.
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| 7. | Furthermore, the normal and axial forces will have no effect, so tangential force must be provided by friction.
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| 8. | C _ n and C _ t are the coefficient of normal force and the coefficient of tangential force respectively.
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| 9. | In this case, if the tangential force is reduced then the elastic deformations and shear stresses reduce as well.
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| 10. | We really want to know the tangential force pulling the blade around, and the radial force acting against the bearings.
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