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MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER A force of constant magnitude pushes a box up a vertical surface as shown in the figure. The box moves at a constant speed, If the mass of the box is 640 ka, it is pushed 3. 70 m verticaly upward, the coefficient of friction is 0. 350 and the angle # is 30.0", determine the following, [a) work dong on the bok by F A formerdiagram will help you determine the magnitude of the force F acting on the box. Can you mote an expression for the work done by the force F In terms of the magnitude of the force. the distance the force hott and the angle between the direction of the force and the displacement vector? ] (b) work done on the bot by the force of gravity (c) work done on the box by the normal force (o) increase in gravitational potential energy of the now as it moves up the wall