physics

posted by dean

A block with mass m = 24.0 kg slides down an inclined plane of slope angle 41.4 ° with a constant velocity. It is then projected up the same plane with an initial speed 3.80 m/s. How far up the incline will the block move before coming to rest?

  1. bobpursley

    Ok, figure the coefficent of friction.

    mu=tan41.4 you need to prove that.

    Then

    Initial KE=change in PE + workdoneonfriction

    let x be the distance up the plane.

    1/2 m v^2=mg x*sinTheta + x*mu*mgCosTheta

    do the algebra, solve for x.

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