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To pull a crate a distance of 2 m across the floor, a rope is used to apply an horizontal force of 180 N. A

To pull a crate a distance of 2 m across the floor, a rope is used to apply an horizontal force of 180 N. A frictional force of 70 N opposes this motion. What is the total work done on the crate in J? (Hint: Calculate the work done by the rope and by the friction first.)

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