- #1

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## Homework Statement

## The Attempt at a Solution

Is my work correct?

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- Thread starter temaire
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In summary, the conversation discusses a problem involving the computation of deflection and rotation in a beam. The participant temaire asks for confirmation on whether their work is correct and points out a mistake. They also mention the importance of using the correct unit. The other participant asks about finding the resultant rotation and suggests stating the components instead.

- #1

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Is my work correct?

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- #2

Science Advisor

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Your answer for part (b) currently looks correct. In part (c), you currently computed only the y-direction deflection and rotation, which are correct. But I think you now might also need to compute the z-direction deflection and rotation.

You accidentally typed 877, instead of 866, although you did not use it.

By the way, kN/m^2 is called kPa. Always use the correct, special name for a unit. E.g., 7214 kPa, not 7214 kN/m^2. However, it is better if you use 7.214 MPa, instead of 7214 kPa.

- #3

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I know that the total deflection of the beam is the resultant of the deflections in the y and z directions, as shown

[tex]\delta = \sqrt{u^2 + v^2}[/tex]

where [itex]u[/itex] is the deflection in the z-direction and [itex]v[/itex] is the deflection in the y-direction.

However, how do I find the resultant rotation? Do I simply use the above formula and just switch [itex]u[/itex] and [itex]v[/itex] with the [itex]\theta_y[/itex] and [itex]\theta_z[/itex]?

- #4

Science Advisor

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Yes, I am leaving my answer for rotation in terms of y and z.

Thanks for the replies.

Thanks for the replies.

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