Chapter 5127P5.22The two forces acting on the block are the normal force, n, and theweight, mg. If the block is considered to be a point mass and the x-axis is chosen to be parallel to the plane, then the free bodydiagram will be as shown in the figure to the right. The angle θisthe angle of inclination of the plane. Applying Newton’s secondlaw for the accelerating system (and taking the direction up theplane as the positive xdirection) we haveFnmgy∑=−=cos0: nmg=cosFmgmax∑=−=sin: ag=−sinFIG. P5.22(a)When =°15 0.a=−254. ms2(b)Starting from restvvaxxaxvaxfifff22254200318=+−===−−=diejaf...msm2P5.23Choose a coordinate system with ±iEast and ±jNorth.Fa∑m100kgm s2at 30 0.°5 0010 030 05 008 661.±.±.±N NNNafafafafjFji+=∠ °
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This note was uploaded on 12/14/2011 for the course PHY 203 taught by Professor Staff during the Fall '11 term at Indiana State University .