5. Two blocks m₁(5 kg) and m₂(1 kg) are connected with a string via a pulley. The block m₂ is on a frictionless incline of θ = 30°, as shown in the figure. What is the tension of the string? The acceleration of gravity is 10 m/s².
(A) 4.2 N
(B) 8.3 N
(C) 12.5 N
(D) 15.6 N
(E) 18.8 N
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