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Question

A uniform rod of length l is placed symmetrically on two walls as shown in figure. The rod is in equilibrium. If N1andN2 are the normal forces exerted by the walls on the rod then:
288562.JPG

A
N1>N2
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B
N1<N2
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C
N1=N2
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D
N1andN2 would be in the vertical directions
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Solution

The correct option is D N1=N2
As the rod is in equilibrium, thus net torque about point O is zero i.e. τo=0
N1×l4N2×l4=0
N1=N2

572578_288562_ans.png

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