Answer: The normal force acting on the sled 131.4048 Newtons.
Explanation:
On breaking up force of 70 N into vertical and horizontal components:
Vertical components:[tex]f\cos\theta [/tex]
Horizontal components:[tex]f\sin\theta [/tex]
The normal force is force acting perpendicular on an object.It is a balanced force.
[tex]mg=N+f\sin\theta [/tex]
[tex]N=mg-f\sin\theta=18 kg\times 9.8 m/s^2-70 N\times 0.6427=131.4048 N[/tex]
The normal force acting on the sled 131.4048 Newtons.
