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This is a common misconception. When you draw a force in an FBD, the direction shown only says which direction you are taking as...

Not if you look at your system as a whole, which is actually remaining in static balance while supporting exterior forces. Please, take...

Well, I always leave the door open ajar. Finally, once a month, set the washer on hot without anything in the tub, and place bleach or...

Also, please see: https://www.engineeringtoolbox.com/water-content-compressed-air-d_1275.html...

Here are a couple of other typical situations, a car and a tractor. For a typical light vehicle, normally inflated to say, 25 psi...

The primary reason why nitrogen is used, is to prevent fire supported by compressed air, in the wheel well of an aircraft. Nitrogen also...

Welcome! The water vapor contained in trapped atmospheric air changes volume much more dramatically than air with changes in tire...

... but the system is in static equilibrium. You are incorrect, because you are confusing a node or point of intersection of two members...

All external forces should be considered at the points where they act on the body. D is acting on point Q in the figure you show. But...

To complete the formal solution in post #10. Suppose this problem had a part (b) asking you to find force ##\mathbf D## exerted by the...

Perhaps a formal solution will clarify things for you. Consider the free body diagram on the right. The system consists of the...

It might help to remember that there are two types of equilibrium – translational and rotational. In this question, in the horizontal...

For the armature to remain in static equilibrium, external forces and/or moments must be balanced by opposite external forces and/or...

The diagonal brace does not need to exist for the external forces and moment to remain the same. We could visualize the represented...

The value of the increased lift force at the bottom of the loop is the only net force that induces the airplane to deviate from a level...