physics

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using the strap at an angle of 31° above the horizontal, a Grade 12 Physics student, tired from studying, is dragging his 15 kg school bag across the floor at a constant velocity.

(a) If the force of tension in the strap is 51 N, what is the normal force on the bag?
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(b) What is the coefficient of kinetic friction between the bag and the floor?

  • physics -

    wouldn't it be weight minus the vertical component of the pulling force?

    b) THe horizontal force=friction=mu*(mg-vertical force)=51cosTheta

  • physics -

    bgfgt

  • physics -

    vb

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