Returning to our example: the block is pushed, so a pushing force acts on the block there is friction between the block and the floor, so a friction force acts on the block (opposing its motion) the block is subject to the force of gravity the floor exerts the normal force on the block in order to prevent the penetration of the block. Remember that your shear force (moment) diagrams mean little without stating a convention for which direction (curvature) is positive and which is negative. Positive curvature is often defined as a 'smiley face' i.e., a beam under such curvature would curve. All that circles his head is how pitiful he's been lately, that he's not the best bender to ask, his bending has been shaped into something unusual and harsh and not at all suited for The Avatar. Therefore, we come to the conclusion that 4 forces are acting on our block: Why did I think that it would be any different this time Zuko's POV Avatar Aang and his friends turned to face me, and I forced a smile onto my face as I waved, 'hello, Zuko here. Step 3: Draw the object in isolation with the forces that act on itįinally, draw the object on its own (omitting external elements like other objects, the floor, the ceiling, etc.) and the forces that are acting on it. #Why my bending moment diagram looks not right in sap 2000 software.
