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Byju's Answer

Standard XII

Physics

Tension in a String

Three weight ...

Question

Three weight A, B and C are connected by string as shown in the figure. The system moves over a frictionless pulley. The tension in the string connecting A and B is (where g is acceleration due to gravity)

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Solution

The correct option is D
$T = \frac{2 \times m_{B} m_{C}}{m_{A} + m_{B} + m_{C}} \times g = \frac{2 \times 1 \times 5}{3 + 1 + 5} \times g = \frac{10}{9} g$

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Three weight A, B and C are connected by string as shown in the figure. The system moves over a frictionless pulley. The tension in the string connecting A and B is (where g is acceleration due to gravity)

The correct option is D T=2×mBmCmA+mB+mC×g=2×1×53+1+5×g=109g

The correct option is D
$T = \frac{2 \times m_{B} m_{C}}{m_{A} + m_{B} + m_{C}} \times g = \frac{2 \times 1 \times 5}{3 + 1 + 5} \times g = \frac{10}{9} g$