# Tag Info

The forces acting in the $y$-direction, assuming no motion in that direction, are: $$F_N=mg-T\sin\theta,$$ where $F_N$ is the Normal force exerted by the floor on the spool. The forces acting in the $x$-direction are: $$F_x=T\cos\theta-F_f,$$ where $F_x$ is an assumed net force acting in the $x$-direction and $F_f$ is a friction force. We usually ...