Question

A light string passes over a frictionless pulley. To one of its ends a mass of 6 kg is attached. To its other end a mass of 10 kg is attached. The tension in the thread will be

[RPET 1996; JIPMER 2001, 02]

• A. 24.5 N
• B. 2.45 N
• C. 79 N
• D. 73.5 N

Answer 1

The correct option is D

73.5 N

$T=\frac{2m_1{m}_2}{m_1+m_2}g=\frac{2\times 10\times 6}{10+6}\times 9.8=73.5N$