Statics: Drawing Shear and Moment Diagram

[Chandasouk]

http://img687.imageshack.us/img687/5889/shear.png

I'm having trouble drawing the shear diagram on MAsteringEngineering. I'm pretty sure the values are correct too?

I got By = 10.5 and Ay = 9.5

V(x) = -2x+9.5 for the distributed load

so when I set V=0, I find the x intercept to be 4.75.

At x=5, the shear drops to -0.5 and stays at that value until 8. At x=8, V=-10.5. For x=8 to x=10, the shear is constant at -10.5. When x=10, V=10.5, which should place the point on the x axis.

 

[PhanthomJay]

Looks ok to me, but it might be the solid blue line x = 4.75 thru the point of zero shear that is causing the issue, there is no discontinuity at this point.

 

[Chandasouk]

Is that what the blue lines are for? I actually don't know how to graph something properly using MasteringEngineering.

One of my previous answers did not have the vertical blue line at 4.75, but had everything else the same and that was marked incorrect for me as well.

 

[PhanthomJay]

Is that what the blue lines are for? I actually don't know how to graph something properly using MasteringEngineering.

Sorry, neither do I.

One of my previous answers did not have the vertical blue line at 4.75, but had everything else the same and that was marked incorrect for me as well.

I don't know why, your shear diagram is perfect.