1.

    A block of mass mm is placed on a rough rotating disc at a distance rr from the center. The coefficient of static friction is μs\mu_s. What is the maximum angular speed ω\omega for which the block will not slip?

    A

    ωmax=μsgr\omega_{max} = \sqrt{\mu_s gr}

    B

    ωmax=μsgr\omega_{max} = \frac{\mu_s g}{r}

    C

    ωmax=μsgr\omega_{max} = \sqrt{\frac{\mu_s g}{r}}

    D

    ωmax=rμsg\omega_{max} = \sqrt{\frac{r}{\mu_s g}}

    Question Tags
    📚 Subject:Physics
    📑 Chapter:Laws of Motion
    🎯Topic:Laws Of Friction
    🎓 Ncert Level:Application
    🎯Difficulty :Hard
    ⚡ Time Required :2 mins
    🔄Ncert Concepts :Laws of Friction, Circular Motion

    Related Questions

    1.

    A bullet hits and gets embedded in a solid block resting on a frictionless surface .In this process which one of the following is correct?

    A

    Only momentum is conserved

    B

    Only kinetic energy is conserved

    C

    Neither momentum nor kinetic energy is conserved

    D

    Both momentum and kinetic energy are conserved

    Question Tags
    📚 Subject:Physics
    📑 Chapter:Laws of Motion
    🎯Topic:Laws Of Friction
    🎓 Ncert Level:Understanding
    🎯Difficulty :Medium
    ⚡ Time Required :2 mins
    🔄Ncert Concepts :Conservation of Momentum, Conservation of Kinetic Energy, Inelastic Collision

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