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16-04-2024
Physics

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A girl is using a rope to pull a box that weighs 250 N across a level surface with constant velocity. The rope makes an angle of 30° above the horizontal, and the tension in the rope is 200 N. What is the normal force of the floor on the box?

a. 190 N
b. 150 N
c. 220 N
d. 170 N

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