Recent content by srmeier

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    Newton's laws, Pulley

    In order for the man to move at constant velocity the net force on him must be zero. He can't move at a constant velocity if there is an unbalanced force on the right (think about it: the right side of the rope would accelerate but the left side wouldn't? would the rope not rip in this case?)...
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    Velocity in polar coordinates

    1. Homework Statement I don't understand why when we derive the velocity equation of motion in polar coordinates we start with position equal to R times R hat and not (theta times theta hat + R times R hat). 2. Homework Equations none really.. 3. The Attempt at a Solution Is there an...
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    Looking at a Masters in Comp Sci

    Hey Guys, I'm currently finishing up my B.S in Physics (going into the last semester of Junior year) and plan on getting a Masters in Computer Science concentrating on software engineering. I'm curious if anyone else has made a similar career choice and how it worked out. Also, which...
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    Acceleration Help?

    Re: Acceleration Help????? kinematic equation = equation of motion (this usage should be in your book)
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    Acceleration Help?

    Re: Acceleration Help????? My apologizes, llello is right.
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    Acceleration Help?

    Re: Acceleration Help????? Look for a kinematic equation for position not velocity.
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    Acceleration Help?

    Re: Acceleration Help????? a book is dropped from the ground?
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    Really confused vector momentum problem

    You're not "adding vectors." You need to apply conservation of momentum. Momentum is a vector quantity. Thus if you know the momentum vector before the collision, the sum of the individual momenta afterwards must equal what?
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    Really confused vector momentum problem

    I don't believe law of cosines will get you anywhere. Think about breaking your velocity vectors into their components.
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    What does light look like?

    To have a visual representation of light, light would have to reflect off light and hit your eye. This doesn't occur in reality as far as I'm aware.
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    Rolling motion of a cylinder down an incline

    Did you put your angle in radiants?
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    How to find normal force?

    You must attempt to make a solution before receiving assistance.
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    Calculating Tension

    The purpose of the third rope is to most likely stop the ring from accelerating correct?
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    Find the force of friction

    Normal to the wall goes straight through the axis of rotation. right?
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    Find the force of friction

    150 degrees is the angle between the ladder and the wall (outside the triangle, inside the triangle it is 30). What is the angle between the force normal to the wall and the lever arm?
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