Question

Three equal weights A, B and C of mass 2 kg each are hanging on a string passing over a fixed frictionless pulley as shown in the figure The tension in the string connecting weights B and C is

• A. Zero
• B. 13 N
• C. 3.3 N
• D. 19.6 N

Answer 1

Answer: (B)

13 N

Answer 2

Tension between $m _ { 2 }$ and $m _ { 3 }$ is given by

$T = \frac { 2 m _ { 1 } m _ { 3 } } { m _ { 1 } + m _ { 2 } + m _ { 3 } } \times g$ $= \frac { 2 \times 2 \times 2 } { 2 + 2 + 2 } \times 9.8$ = 13 N