Recent content by adamwhite

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    Anyone taking the AP Physics Tests?

    the multiple choice was easier than previous years, I think the FRQ was, too. :)
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    Anyone taking the AP Physics Tests?

    Just got back from taking the C: Mech test. I thought it was alright, I skipped 6 MC and missed probably 4. Answered about half of the FRQ, I think I passed. :)
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    Hammer/Nail problem involving torque

    Yeah, you're right it would. But I still don't see how you got your numbers :(
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    Hammer/Nail problem involving torque

    This is how I did it: My diagram looks like this http://img219.imageshack.us/img219/7730/nailod0.png Since the 150N is the horizontal component of the force exerted on the nail I used trig to find the force. sin30 = 150/F F = 150/sin30 = 300
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    Hammer/Nail problem involving torque

    Why do you do it that way instead of the way I did it? Can you explain that please?
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    Hammer/Nail problem involving torque

    How did you get your answers?
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    Hammer/Nail problem involving torque

    Homework Statement Figure P8.58 shows a claw hammer as it is being used to pull a nail out of a horizontal board. If a force of magnitude 150N is exerted horizontally as shown, find a) the force exerted by the hammer claws on the nail and b) the force exerted by the surface at the point of...
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    Center of Gravity/Torque problem

    Snazzy, do you have AIM by any chance? I have another problem that I'm too stupid to figure out and it would be awesome if you could help. I was gone from school for a week but I have to turn this all in on Monday and I just have a couple questions. :)
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    Center of Gravity/Torque problem

    I got T2, 672N, but now I'm not quite sure how to get T3. To find T2 I did: \sumT = (1.5)(700) + (30 * 9.8) - 2T_{2} = 0 I also did that (but a little different) to find T1. The angle for T3 is 180 so to me it seems like there would be no force, but the book says it is 384N Edit: I just read...
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    Center of Gravity/Torque problem

    Thanks :) I was thinking the pivot was in the middle for some reason =\ . Well I got T1 (501N) I know that's correct because I checked in the back. Now I just need the other two.
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    Center of Gravity/Torque problem

    \sumF = 0 if it is in equilibrium. I'm still lost :(. I don't know how to find the forces except the two I already have.
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    Center of Gravity/Torque problem

    Homework Statement A uniform plank of length 2.00m and mass 30.0 kg is supported by three ropes. Find the tension in each rope when a 700N person is 5m from the left end. Here's the diagram of the problem: http://img206.imageshack.us/img206/3752/torquere9.png Homework Equations \tau =...