Problem 5-102 Friction force - Part 6
A skier of mass \(79\; kg\) is sliding at constant velocity down a slope inclined at \(8.3^\circ\) to the horizontal. Determine the magnitudes of:
(a) the normal force exerted on the skier.
(b) the frictional force exerted on the skier.
Accumulated Solution
FBD
\(a_x = a_y = 0 \\ mg \sin \theta - F_f = 0 \\ F_f = 1.1\times10^2\; N \; \text{ (answer to part (b))}\)
\(\sum F_f = mg \sin \theta - F_f = 0 \\ F_f = mg \sin \theta = (79\; kg)(9.8 \;m/s^2)\sin 8.3 = 1.1\times 10^2\; N\)