Question

Jake drags a sled of mass 10 kg across the snow. The sled is attached to a rope that he pulls with a force of 30 N at an angle of 25 degrees. If there is no friction, what is the normal force acting on the sled?

Answer 1

Let the aacceleration due to gravity
\[9.8m/s ^{2}\]
The weight of the sled (acting downwards) is \[W=10g=10*9.8=98N\]
The vertical component of the tension in the rope is
\[V=30*\sin25º=12.7N\]
THe normal force on the ground is
\[N=98-12.7 = 85.3N\]