physics

4. What force is needed to push a 15 N object up a 20° incline at constant speed when the coefficient of friction is 0.30?

asked by physics LSU
  1. Compute the friction force,
    Ff = W*cos20*Uk
    Add it to the component of the weight in the direction down the incline:
    W sin20.
    The applied force must equal the sum of those two forces if the object is yo move at constant speed up the incline.
    Uk = 0.30
    W = 15 N

    posted by drwls

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