Question

Make two small stacks of books, so that a meter stick (or ruler or yard stick) can be placed across them making a structure like a bridge. Add the cylinder to the middle of the meter stick. The meter stick should be visibly deflected. Add arrows to indicate the forces acting on the cylinders. Remove the cylinder and you should no longer be able to detect the deflection of the meter stick. Is the meter stick still deflected when you have no cylinder on it, and you cannot see the deflection? Imagine that the meter stick is a steel bar, with a cylinder on it. Would you expect to see the beam deflected? Would the beam deflect? Use the cut out arrows to indicate all the forces acting on the cylinder. Draw them and identify them. Are they equal or unequal? Explain.

Answer 1

Since this is a conceptual question feel free to ask further questions in the comment section. Thanks.

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