Coefficient of Kinetic Friction

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SUMMARY

The coefficient of kinetic friction for a snowboarder skidding to a stop can be calculated using the force of kinetic friction, mass, and acceleration. Given a snowboarder with a mass of 71kg, a skidding distance of 9.4m, and a force of kinetic friction of 950N, the coefficient of kinetic friction (μ) is determined using the equation μ = F_friction / (m * g), where g is the acceleration due to gravity (9.81 m/s²). The calculated coefficient of kinetic friction is approximately 0.13.

PREREQUISITES
  • Understanding of Newton's Laws of Motion
  • Familiarity with the concepts of force and friction
  • Basic knowledge of kinematics and acceleration
  • Ability to manipulate algebraic equations
NEXT STEPS
  • Study the derivation of the friction force equation in physics
  • Learn about the factors affecting the coefficient of friction
  • Explore kinematic equations for motion with constant acceleration
  • Investigate real-world applications of kinetic friction in sports
USEFUL FOR

This discussion is beneficial for physics students, educators, and anyone interested in understanding the dynamics of motion and friction in sports contexts.

lahle1
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At the bottom of a hill, a snowboarder with a velocity of 16m/s (FWD) skids to a stop after moving a distance of 9.4m. The mass of the board and rider is 71kg, and the magnitude of the force of kinetic friction during the skid is 950N.

Determine the coefficient of kinetic friction during skidding.

How would I go about solving this problem? What equations do I need to use?
 
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lahle1 said:
At the bottom of a hill, a snowboarder with a velocity of 16m/s (FWD) skids to a stop after moving a distance of 9.4m. The mass of the board and rider is 71kg, and the magnitude of the force of kinetic friction during the skid is 950N.

Determine the coefficient of kinetic friction during skidding.

How would I go about solving this problem? What equations do I need to use?

Welcome to the PF.

In the material that you have been studying, there will be an equation relating the force of friction to the mass of the object and the coefficient of friction. Can you write that equation for us?

And then how will you apply it to this problem? Write the equation for Newton's Law, and describe how to use it in this problem...
 

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