ME274 - Basic Mechanics II: Homework Problem 7/24

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Sep 30, 2008

Homework Problem 7/24

Suggestions:

Attach XYZ to ground (fixed axes)
Attach observer and xyz to boom.
At the instant shown, xyz and XYZ are aligned.

4 comments:

Alex Taylor said...: Be careful when solving for acceleration and velocity. I had switched a negative to a positive sign and it took me quite a while to figure out what I did wrong.; September 30, 2008 at 9:51 PM
nour said...: Sir

In this problem, the instant required is when angle Beta=30. So i guess xyz and XYZ are not aligned at this instant.
Is this right?; October 1, 2008 at 4:15 AM
CMK said...: That all depends on how you align your axes. If you put x along the boom, then no. However, in the figure provided with this post they are.

The alignment is your choice. The final magnitudes will be unchanged by the alignment.; October 1, 2008 at 6:18 AM
nour said...: ok thank you i guess i was confused.; October 1, 2008 at 10:31 AM

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