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2

Even though the spur gear tooth is moved by one rotation, there is a force associated with it which is related to the friction (or in general the load on the spur gear). To simplify things, let's assume that the system is in steady state (i.e. no angular acceleration). In that case you don't need to worry about inertial effects. So, lets assume that the ...

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When you want to determine the internal reactions to a structure (in a example such as this), then the best course of action is to isolate the structure of interest by creating section around the part. The next step is to draw the internal forces on the points where the section (blue bubble) intersects with the structure. Please notice, that in this ...

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If you are an engineering student, you understand that beam deflects under load, and the longer the more flexible than the shorter beam, thus deflect more. The answer to this problem can be worked out from the concept of "beam on elastic (deflectable/settled) support" For your case, with the identical uniform load on both beams, it is obvious that ...

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There is no error in your diagram. if this is the moment diagram the short beam moment diagram should be a superposition of a triangle due the concentrated load from the long beam and the parabola due to the uniform load on the beam. And it is. unless your long beam is much stiffer than the shot beam which is highly unusual. The long beam moment diagram is ...

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With the selection of constraints you have selected it is as if the longer beam (C and D) is resting (or is being supported by) the shorter beam (A and B). What happens is that while the load is distributed among the individual beams, the bending moments and the lengths are different. Therefore independently the longer beam (assuming they have the same ...

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