What is the friction force required for a wheel to roll without slipping?

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To determine the friction force required for a wheel to roll without slipping, a horizontal force of 200N is applied to a 50 kg wheel with a radius of gyration of 0.07 m. The static and kinetic friction coefficients are given as ms = 0.20 and mk = 0.15. The friction force at the ground contact point must be calculated and compared to the maximum friction force, Fmax, to assess the validity of the rolling without slipping assumption. Proper forum etiquette suggests providing relevant equations and attempted solutions when seeking assistance. This ensures a more productive discussion and learning experience.
kareem_3d
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A cord is wrapped around the inner drum of a wheel and pulled horizontally with a force of 200N. The wheel has a mass of 50 kg and a radius of gyration of 0.07 m. Let ms = 0.20 and mk = 0.15.
(a) Determine the friction force, F at the wheel ground contact point assuming that the wheel rolls without
slipping.
(b) Compare the friction force F found in (a) to Fmax and comment with respect to the rolling without slipping assumption

[PLAIN]http://img194.imageshack.us/img194/7377/ms2la.jpg
 
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Hi kareem_3d and welcome to PF. Please follow the rules of this forum and use the template when you seek help with homework. Show us the relevant equations and tell us what you tried and what you think about the problem. We just don't give answers away.
 

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