Two bodies of masses m1 = 5 kg and m2 = 3 kg are connected by a light

1.	Two bodies of masses m1 = 5 kg and m2 = 3 kg are connected by a light string going over a smooth light pulley on a smooth inclined plane as shown in the figure. The system is at rest. The force exerted by the inclined plane on the body of mass m1 will be :[Take g = 10 ms–2](A) 30 N (B) 40 N (C) 50 N (D) 60 N
Answer» Correct option is (B) 40 N For equilibrium m₂g = m₁g sinθ Sinθ = m₂ / m₁ = 3/5 Cosθ = 4/5 Normal force on m₁= 5g cosθ = 5 x 10 x 4/5 = 40N

Two bodies of masses m1 = 5 kg and m2 = 3 kg are connected by a light string going over a smooth light pulley on a smooth inclined plane as shown in the figure. The system is at rest. The force exerted by the inclined plane on the body of mass m1 will be :[Take g = 10 ms–2](A) 30 N (B) 40 N (C) 50 N (D) 60 N

Answer»

Correct option is (B) 40 N

For equilibrium m₂g = m₁g sinθ

Sinθ = m₂ / m₁ = 3/5

Cosθ = 4/5

Normal force on m₁= 5g cosθ

= 5 x 10 x 4/5 = 40N

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