Physics 11 problem 10

  • Thread starter Iceclover
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  • #1
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Homework Statement


An 845N sled is is pulled a distance of 185m. The taskt requires 1.20 x 10^4J of work and is done by pulling a rope with a force of 125N. At what angle is the rope held


Homework Equations


W=Cos(of theta) Fd


The Attempt at a Solution


F=845N
d=185m
W=1.20x10^4J
F=125N
angle=?

I know how to do this question if im given an angle but i don't really know what to do when im supposed to be finding the angle.
 

Answers and Replies

  • #2
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theta = arccos(W/(F*d)) is how you'd find the angle given that eqn.
 
  • #3
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is the right answer 1.0 degrees?
 
  • #4
PhanthomJay
Science Advisor
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is the right answer 1.0 degrees?
No. You were given the correct equation , please show how you arrived at your answer.
 

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