Recent content by santi_h87

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    Student on Ladder (Equilibrium)

    inky, what are those 4 forces exerted on right leg? I got 3 1 is on C from the left leg, which has negative Y component and positive X component 2 is on E from the ground, which only has a positive Y component 3 would be the tension the same for the left leg, I got 4 forces 1 is on C from...
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    Pivoting Stick (Rotational Dynamics)

    I misunderstood the problem, and the answer is the correct one! sorry, and someone can close this post if necessary Homework Statement A stick of uniform density with mass M = 7.9 kg and length L = 1 m is pivoted about an axle which is perpendicular to its length and located 0.15 m from one...
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    What is the maximum speed a rock can have before a string breaks?

    "There should only be two forces acting on the mass." "Alternatively, you can divide the string tension into orthogonal components." "But right now you're essentially dividing by a cosine when you should be multiplying by one." those were the key points :)
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    What is the maximum speed a rock can have before a string breaks?

    alright thank you nickjer and mapes! correct answer was 5.651 m/s (I wasn't THAT wrong ^_^), I only needed another way to see the problem! thanks guys
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    What is the maximum speed a rock can have before a string breaks?

    well, I understand what you are saying and that's exactly what I did... I draw an Inclined plane in which the direction of Y is the direction of the upper string, and the origin would be right in the mass. The acceleration I was talking about was the centripetal acceleration, which, if you look...
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    What is the maximum speed a rock can have before a string breaks?

    thanks! you're right, I don't have much experience in asking for help for my homework, but there it is, the picture of the problem.
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    What is the maximum speed a rock can have before a string breaks?

    Physics 101 (forces), Rock on Strings: driving me crazy! okay, this problem is DRIVING ME CRAZY! please help me out here, it's a TYCHO homework: Homework Statement A 540 gram rock is held by two strings of 45 cm with ends 57 cm apart (distance d in the picture), any string will break...
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