| Graceful
Grace has tied a rope to this 2000-N safe (not just any old rope, you'll
notice). She is pulling on this rope (gracefully, of course) with a force
of 400 N. The rope makes an angle of 60° with the horizontal.
The safe, which contains the riches of physics knowledge, is moving with a constant velocity across the level floor. Let's see if you can unlock the secret of the coefficient of kinetic friction for this situation. Don't forget to consider all the forces!!! |
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