SteveM-
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1. A 10 Kg painting is hung with a wire supported by two nails. The length of the wire is 1.3m. A) what is the tension in the wire? B) what is the magnitude of the force exerted on each nail by the wire (assume that the tension is the same in each part of the wire).
In the diagram you are given the distance between the far left and far right points on the painting to which the wire is attached: which is 1.2 m.
the wire is symetric and there is a distance of 0.4m on the x-axis between each point. I suppose a picture of the wire kind of represents a 2 dimensional pyramid with its top cut off and no bottom; if that helps.
2. Lots of vector manipulation...
3. This should be a pretty easy problem but I was having difficulty conceptualizing the force diagrams and the individual forces on each point, namely, how does the length of the wire relate to the tension as well as how do I distribute the total weight of the painting as a gravity force at each point. Once I know this it should just be a simple matter of vector addition.
In the diagram you are given the distance between the far left and far right points on the painting to which the wire is attached: which is 1.2 m.
the wire is symetric and there is a distance of 0.4m on the x-axis between each point. I suppose a picture of the wire kind of represents a 2 dimensional pyramid with its top cut off and no bottom; if that helps.
2. Lots of vector manipulation...
3. This should be a pretty easy problem but I was having difficulty conceptualizing the force diagrams and the individual forces on each point, namely, how does the length of the wire relate to the tension as well as how do I distribute the total weight of the painting as a gravity force at each point. Once I know this it should just be a simple matter of vector addition.
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