As you are trying to move a heavy box of mass [tex]m[/tex], you realize that it is too heavy for you to lift by yourself. There is no one around to help, so you attach an ideal pulley to the box and a massless rope to the ceiling, which you wrap around the pulley. You pull up on the rope to lift the box. A.) What is the magnitude [tex]F[/tex] of the upward force you must apply to the rope to start raising the box with constant velocity? Express the magnitude of the force in terms of [tex]m[/tex], the mass of the box. I think the answer should be mg/2 is this correct?