A 35-kg trunk is dragged 10 m up a ramp inclined at an angle of 12 degrees to the horizontal by a force of 90 N applied at an angle of 20 degrees to the ramp. At the top of the ramp, the trunk is dragged horizontally another 15 m by the same force. Find the total work done.
The answer in the book is 2114 J. How do I get this?
Sep 4th 2009, 06:12 PM
the question is very poorly worded ... apparently, the author meant for the applied force to be 20 degrees relative to both the incline and the horizontal surface ...