Question

A uniform rod of length 200 cm and mass 500 g is balanced on a wedge placed at the 40 cm mark. A mass of 2 kg is suspended from the rod at 20 cm and another unknown mass ‘m’ is suspended from the rod at the 160 cm mark as shown in the figure. Find the value of ‘m’ such that the rod is in equilibrium. (g=10 m/s2)

• A. $\frac{1}{12}$ kg
• B. $\frac{1}{2}$kg
• C. $\frac{1}{2}$kg
• D. $\frac{1}{2}$kg

Answer 1

Answer: (A)

$\frac{1}{12}$ kg

Answer 2

The correct answer is option (A) : $\frac{1}{12}$ kg