Calculating Coulomb friction load torque

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kakarot1905
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Hi

How can I calculate the Coulomb friction load torque of a rolling spear on a surface with a coulomb friction coefficient of 0.1?


Other details:
Mass: 1Kg
Radius: 0.1m


Thanks in advance
 

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Your question was not too clear to me and possibly others, care to restate it?
 

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