A particle can slide along a track with elevated ends and a flat central part, as shown in Figure 8-53. The flat part has length L = 40 cm. The curved portions of the track are frictionless, but for the flat part the coefficient of kinetic friction is µk = 0.32. The particle is released from rest at point A, which is a height h = L/2. How far from the left edge of the flat does the particle finally stop?(adsbygoogle = window.adsbygoogle || []).push({});

I set this equation:

mgh = μmgd

d = h/μ

d = 20/.32

d = 62.5 cm

Because the answer > L, I subtracted 40 cm from it and got 22.5 cm as the answer (I'm supposed to give it in cm). But it won't accept my answer. What did I do wrong?

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# Homework Help: Particle sliding on a track (cons. of energy problem)

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