A small $1\mathrm{.}04$ kg block slides up a curved inclined surface described by $y=k*ln(\frac{x}{10})$ where $k=21\mathrm{.}7m,$ and where $x$ and $y$ are both in metres; at a speed of $v=9\mathrm{.}7\frac{m}{s}$ when $x=20m,$ as shown in the figure.

ine coem$$c$$ent o$$ne$$ iric$$on is ${}_k=u.0.$

What is the radius of curvature of the path, $,$ at this instant?

What is the normal force, $N,$ acting on the block from the inclined surface?

What is the tangential accleration?