- #1

You are using an out of date browser. It may not display this or other websites correctly.

You should upgrade or use an alternative browser.

You should upgrade or use an alternative browser.

- Thread starter c0der
- Start date

In summary, the text on the right defines sa and sb as positive by definition, but the picture on the left shows that sa and sb are actually negative when measured from the left side of the diagram. This means that by superposition, if they can both move, sa + sb = d.

- #1

Physics news on Phys.org

- #2

- 8,032

- 869

Pretend only block B moves. Isn't it obvious block B has to move 3m since A is stationary and d is the distance from the left side of A to the left side of B. So sb = 3 and sa = 0.

So by superposition, if they can both move, sa + sb = d.

- #3

c0der

- 54

- 0

- #4

- 8,032

- 869

c0der said:

Very good point! But it looks like in the text on the right they decided to make sa and sb both positive by definition, which as you point out is

In other words, sb should be negative going by the picture arrows but then superposition is sa + (- sb) = sa - sb. Amounts to same thing.

- #5

c0der

- 54

- 0

Hibbeler 12-210 is a method for solving constraint equations in engineering and physics problems. It was developed by renowned engineer and author, R.C. Hibbeler, and is widely used in the fields of mechanics and structural analysis.

Hibbeler 12-210 involves breaking down a complex system into smaller, simpler components and then using mathematical equations to find the unknown forces or reactions at each component. This allows for the solution of constraint equations, which are equations that represent the relationship between these forces and reactions.

Hibbeler 12-210 is primarily used for solving problems in mechanics and structural analysis, such as analyzing the forces acting on a bridge or determining the stresses in a truss system. It can also be applied to other engineering and physics problems that involve constraint equations.

Hibbeler 12-210 can be challenging to learn, especially for those without a strong background in mathematics or engineering. However, with practice and a thorough understanding of the concepts, it can be a powerful tool for solving complex problems.

Yes, there are other methods for solving constraint equations such as the Lagrange multiplier method and the principle of virtual work. However, Hibbeler 12-210 is a widely used and effective method that is often preferred in engineering and physics applications.

- Replies
- 10

- Views
- 2K

- Replies
- 6

- Views
- 4K

- Replies
- 13

- Views
- 3K

- Replies
- 4

- Views
- 2K

- Replies
- 2

- Views
- 1K

- Replies
- 25

- Views
- 1K

- Replies
- 5

- Views
- 2K

- Replies
- 34

- Views
- 2K

- Replies
- 17

- Views
- 3K

Share: