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Free Body Diagram

A rod OA is s...

Question

A rod OA is suspended with help of a massless string AB as shown in figure. Rod is hinged at point O. Draw free body diagram of the rod.

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Solution

$N_{1}$ =normal reaction between sphere and wall,
$N_{2}$ =normal reaction between sphere and ground
$N_{3}$ =normal reaction between sphere and road and
$N_{4}$ =normal reaction beween rod and ground
$f =$ force of friction between rod and ground

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