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18. In Fig. 1.35, a uniform bar of length 1 m is supported at its ends and loaded by a weight W kgf at its middle.In equilibrium, find the reactions R, and R, at the ends.RAR2W kgf |
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Answer» ong>ANSWER: R1+R2=w (BALANCING Forces in Y−ax) __(I) WRITING EQUATION for torque about the centre of bar : R1(0.5)+w(0)−R2(0.5)=0 R1=R2 __(II) From eq. (I) & (II) R1=R2=2wKgf. |
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