Answer to Question #97956 in Mechanics | Relativity for Haidar

Question

A girl pulls her school box with a force of 78 Newton inclined at 27 degrees to the ground calculate the part of the force moving the box along the ground

Answer 1

The horizontal component of the force

$$F_x=F\cos 27\degree=78\:\rm N\times \cos 27\degree=69.5\: N$$