Recent content by apierron

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    Finding Angle Which Cube Falls Off Sphere

    Okay thanks! I think that will be way easier than what I was trying to do.
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    Finding Angle Which Cube Falls Off Sphere

    Okay so I took another look at this problem and I'm pretty sure I went about it all wrong. My new approach would be to take the ∫F ds, where F would be the sum of my forces and ds would be the change in arc length. I started working this out and I just don't know what to set my limits as and...
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    Finding Angle Which Cube Falls Off Sphere

    I forgot, he also gave us the length of one side of the cube as 3cm
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    Finding Angle Which Cube Falls Off Sphere

    A cube of polished steel sits on top of a highly polished and waxed hemisphere of polycarbonate (radius 92 cm). For these two surfaces interacting, the coefficient of kinetic friction is the same as the coefficient of static friction. The cube is given a very small 'nudge' perpendicular to the...
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    Create an expression for a rotating plate

    so 1 rpm is 2pi radians/60 s, so now I have v(N)=60Rp/N... better?
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    Create an expression for a rotating plate

    Okay so what I found is v= ωr so I came up with v(N)=2(pi)Rp/N but since he says N is rotations per minute I divided that by 60 to get v(N)=120(pi)Rp/N so that my units are in m/s Does this seem right?
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    Create an expression for a rotating plate

    This sounds bad but I don't know what w represents
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    Create an expression for a rotating plate

    A flat, circular plate (mass Mp, radius Rp, thickness Tp) rotates parallel to the surface of the Earth on a frictionless axle. As it spins, a point on the top of the disc traces a circle each time the plate completes a rotation. in terms of the number of rotations per minute (N/min), create...
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    Potato Launcher with Constant Velocity

    Ok thanks! I think I have it figured out. I was wondering what did the velocity of the cart have to do with anything?
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    Potato Launcher with Constant Velocity

    So kind of like going backwards?
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    Potato Launcher with Constant Velocity

    Homework Statement As a participant in a robotic competition, you must launch a potato from a moving cart and strike a target. The potato must reach the apex of flight just as it travels over a screen, then it must pass through the center of an opening in a wall. The cart moves at a steady...