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JohnSmith12
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Thanks everyone for your help.
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OK, but that step was unnecessary. (You were given mg, and that's what you need.)JohnSmith12 said:I solved for the mass of the sled, 23.98kg.
mk, usually symbolized as ##\mu_k##, is what you are solving for. Use NTW's hint to determine for the force of friction, Ff. Then you can solve for the coefficient of friction.JohnSmith12 said:But without mk I'm having difficulty finding an answer.
Kinetic friction is the force that resists the movement of two surfaces that are in contact with each other. It occurs when there is relative motion between the two surfaces.
2.The magnitude of kinetic friction depends on the nature of the two surfaces in contact, the normal force between the surfaces, and the roughness of the surfaces.
3.Kinetic friction is the force that opposes the motion of two surfaces that are already in motion, while static friction is the force that keeps two surfaces from moving when they are in contact and not moving relative to each other.
4.The formula for calculating kinetic friction is Fk = μN, where Fk is the force of kinetic friction, μ is the coefficient of kinetic friction, and N is the normal force between the two surfaces.
5.Kinetic friction can be reduced by using lubricants, such as oil or grease, between the two surfaces in contact. Polishing or smoothing the surfaces can also reduce the roughness and therefore the magnitude of kinetic friction.