Effect of time derivative of contact area on dynamic friction

Kazuo Arakawa

    Research output: Contribution to journalArticlepeer-review

    12 Citations (Scopus)


    This study investigated dynamic friction during oblique impact of a golf ball by evaluating the ball's angular velocity, contact force, and the contact area between the ball and target. The effect of the contact area on the angular velocities was evaluated, and the results indicated that the contact area plays an important role in dynamic friction. In this study, the dynamic friction force F was given by F =μN +μη dA/dt, where μ is the coefficient of friction, N is the contact force, dA/dt is the time derivative of the contact area A, and η is a coefficient associated with the contact area.

    Original languageEnglish
    Article number241603
    JournalApplied Physics Letters
    Issue number24
    Publication statusPublished - Jun 16 2014

    All Science Journal Classification (ASJC) codes

    • Physics and Astronomy (miscellaneous)


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