Two blocks, with masses 17 kg and 15 kg, are connected by a light string that passes over a frictionless pulley of negligible mass as shown. The surfaces of the planes are frictionless. The blocks are

Question

Two blocks, with masses 17 kg and 15 kg, are connected by a light string that passes over a frictionless pulley of negligible mass as shown. The surfaces of the planes are frictionless. The blocks are released from rest. $T_{1}$ and $T_{2}$ are the tensions in the strings. Which of the following statements is/are correct?

TestHub · Accepted Answer

Component of weight along the incline: 17 kg block $= 17 g sin 4 5^{\circ} \approx 12.0 g$ ; 15 kg block $= 15 g sin 6 0^{\circ} \approx 13.0 g$ .

The 15 kg block pulls harder, so the 15 kg block accelerates down its plane and the 17 kg block goes up its plane.

The pulley is frictionless and massless, so the tension is the same on both sides: $T_{1} = T_{2}$ . So only statement (A) is correct.

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