You are pulling a suitcase through the airport at a constant speed. the handle of the suitcase makes an angle of 45 degrees with respect to the horizontal direction. if you pull with a force of 7.5N parallel to the handle, what is the force of friction acting on the suitcase?

Answer 1

The force of friction equals the component of the pulling force along the floor, since there is no acceleration.

F(friction) = 7.5 N * cos45