Guillermo, taking his T-rex for a walk to the Whole Foods store, pulls on the le

Question

Guillermo, taking his T-rex for a walk to the Whole Foods store, pulls on the leash with a force of 562 N. The T-rex, being a balky and uncooperative creature, drags his feet. Consequently, the "walk" causes Guillermo to do a considerable amount of work on the T-Rex. Since the T-rex is much taller than Guillermo, the leash actually makes an angle of 49 degrees with the horizontal. If the displacement of the T-rex is 33 m as it is dragged to the store, How much work (in Joules) did Guillermo do on the T-Rex? Don't round during the problem and keep at least 1 decimal place at the end.

Explanation / Answer

Work done by guillermo on the T-Rex is given by

W=FdCos(o)

W=562*33*Cos49

W=12167.3 J

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