Post a New Question

Physics

posted by on .

If a curve with a radius of 88m is perfectly banked for a car traveling 75km/h, what must be the coefficient of static friction for a car not skid when traveling at 95 km/h?

  • Physics - ,

    change velocities to m/s

    Then, sketch the bank and force vectors parallel to the bank.

    1) mg*sinTheta=mv^2/r * cosTheta

    where v=75km/hr in m/s
    solve for tan theta (sin/cos).

    verify that. Now, you increase speed, same angle.

    mg*sinTheta+mu*mg*cosTheta=mv^2/r * cosTheta

    so find mu. How is the easy way? divid e by cos theta , you know tan theta.
    v= new speed (95 in m/s), solve for mu.

  • Physics - ,

    Can you show me step by step with the numbers in there? I am confused..

  • Physics - ,

    -0.327

Answer This Question

First Name:
School Subject:
Answer:

Related Questions

More Related Questions

Post a New Question