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A cylinder with 1500 N weight is resting in an unsymmetrical smooth groove as shown in fig. determine reactions at the point of contacts.

equilibrium • 1.1k  views
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Applying Lami's Theorem

$(1500/ \sin 105) = (RA/\sin 120) = (RB/\sin 145)$

Solving all equations we get

$RA = 1344.86 N \\ RB = 890.715 N$

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Why they had taken angle as 120,105 ,145

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