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20090306153419

# 20090306153419 - MATSE 290 Spring semester 1996 Q.1 Three...

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Unformatted text preview: MATSE 290 Spring semester 1996. Q.1 Three identical steel disks are stacked in a box as shown. The weight and the diameter of the smooth disks are 501b and 10 in respectively. (a) Draw the free- body diagrams (FBD) for the disks A and B showing all forces on them and write down the equilibrium equations for each. (b) Find the three forces on disk B, (by disk A, the side wall and the floor). (c) If the width of the box is increased from 22in to 26in, how will the forces change? ((1) Describe (without calculations) how you think the forces will change as the width of the box is increased until disk A eventually falls through. MATSE 290 Spring semester 1996. Quiz 1‘ Q.2 A street sign weighing 1000N hangs ' C33“ “39”” from a strut weighing 750N which is also held by the light cable as shown. (a) Draw a free-body diagram (FBD) for gwi-‘i‘ii‘ﬁ' the strut BCD showing all forces clearly. (b) Write down the equilibrium equations for the strut BCD and the cable AB and use them to determine (1) the tension in the cable AB and (2) the forces that the wall exerts on the beam AB at C. Clearly indicate the direction of these forces. ...
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20090306153419 - MATSE 290 Spring semester 1996 Q.1 Three...

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