Questions
In the following figure the masses of the blocks A and B are same and each equal to m. The tensions in the strings OA and AB are T2 and T1, respectively. The system is in
equilibrium with a constant horizontal force mg on B. Then T1 is
detailed solution
Correct option is B
Considering free body diagram of block BΣFx=0;T1cosθ1=mg .......(i)ΣFy=0;T1sinθ1=mg .......(ii)By squaring and adding equations(i) & (ii), we getT12sin2θ1+cos2θ1=2(mg)2∴T1=2mgSimilar Questions
Natural length of the spring is 40 cm and its spring constant is 4000 N m-1. A mass of 20 kg is hung from it. The extension produced in the spring is (Given g = 9.8 m s-2)
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