Three rugby players are pulling horizontally on ropes attached to a box which remains stationary. Player 1 exerts a force F1 equal to 200N in a direction 60 degrees south of east. Player 2 exerts a force F2 equal to 300N at an angle of 35 degrees north of east. Determine the force F3 exerted by a third player such that the box remains stationary. Assume there is no friction between the box and the ground. 1) Set-up: Draw a free body diagram for the first two forces. Use the tip to tail rule to then sketch the direction and length of the third force. 2) Solve: Using the known information, Calculate the magnitude and direction of the forsce F3.y. 4) Reflect: Is the direction and magnitude of the third force reasonable

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Newton's First Law of Motion

If a very smooth ball is rolled down an inclined surface with zero friction, the ball will continue to roll indefinitely for an infinite time, in an attempt to reach to the same height on the opposite hill!