Question:
A block weighing $10 \mathrm{~N}$ travels down a smooth curved track AB joined to a rough horizontal surface (figure 8-E5). The rough surface has a friction coefficient of $0.20$ with the block. If the block starts slipping on the track from a point $1.0 \mathrm{~m}$ above the horizontal surface, how far will it move on the rough surface?
Solution:
