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Posted by on Tuesday, October 2, 2012 at 6:04pm.

A 3.00-kg block starts from rest at the top of a 27.5° incline and slides 2.00 m down the incline in 1.20 s.
(a) Find the acceleration of the block.

(b) Find the coefficient of kinetic friction between the block and the incline.

(c) Find the frictional force acting on the block.

(d) Find the speed of the block after it has slid 2.00 m.

  • physics - , Tuesday, October 2, 2012 at 6:13pm

    on the incline, the block has a normal to the incline component (mg*cosTheta), and a component of gravity force down the plane(mg*sinTheta)

    a. Vf=at , but Vf^2=2ad, so

    b. Forcedown=mg*sinTheta-mu*mg(cosTheta)
    but f=ma, so
    ma= stuff to right, solve for mu.

    c. Forcedown=mg*sinTheta-frictionforce

    d. friction force= mu*mg(cosTheta)

  • physics - , Thursday, November 15, 2012 at 3:29pm


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