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    Drawing Relative Velocity/Triangle Diagrams?

    If you look back at the initial problem statement, it asks for the minimum angle measured from the horizontal, not the vertical. Technically, the second triangle in your image is the correct diagram. However, by using the cosine you are finding the x-component of the 700N force, which is not...
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    Drawing Relative Velocity/Triangle Diagrams?

    Haha... I'm using the PF app and it didn't show up for me... I'm sorry for the confusion.
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    Drawing Relative Velocity/Triangle Diagrams?

    Was the 40 degrees given in the problem statement?
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    Drawing Relative Velocity/Triangle Diagrams?

    Why did you find 540sin(40)? Where did that 40 come from?
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    Spring force problem

    How did you get 65N for your value of k? The units for k are N/m, correct?
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    Electric potential at the center of a insulating sphere

    I'm a bit confused about how you got your limits of integration. Would you mind explaining? What is the final answer to this problem, by the way?
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    Bungee Jumping Spring Constat/Work-Energy

    Start by drawing a free body diagram. This should help you visualize the next step.
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    Bungee Jumping Spring Constat/Work-Energy

    What forces are acting on Astrid as she falls? Specifically, what forces are acting on her just before she rebounds and how are these forces related?
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