Engineering Mechanics - DynamicsChapter 13NbMg−Mv2ρ⎛⎜⎝⎞⎟⎠=NbMv20m()⎛⎜⎝⎞⎟⎠+=Nb1.57 kN=*Problem 13-60The sled and rider have a total mass Mand start from rest at A(b, 0). If the sled descendsthe smooth slope which may be approximated by a parabola, determine the normal forcethat the ground exerts on the sled at the instant it arrives at point C. Neglect the size of thesled and rider. Hint: Use the result of Prob. 13–58.Units Used:kN103N=Given:a2m=b10 m=c5m=M80 kg=g9.81ms2=Solution:yxcxb⎛⎝⎞⎠2c−=y' x2cb2⎛⎜⎝⎞⎟⎠x
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