A 50-n crate is pulled up a 5-m inclined plane by a worker, Ask an Expert

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a 50-N crate is pulled up a 5-m inclined plane by a worker at a constant velocity. If the plane is inclined at an angle of 37 degrees to the horizontal and there exists a constant frictional force of 10 N between the crate and the surface, what is the force applied by the worker?

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