How force is applied to a half meter rule to balance a mass of 20 g at the 16 cm mark? (i) By applying a force of at least 500 gf/cm horizontally. (ii) By hanging a mass of 100 g upwards at the 100 cm mark.
Draw a diagram of the arrangement.
Find the mass of the half meter rule.
(D) Ans: (6) 105.
17. A uniform meter rule with a mass of 100 g is balanced on a fulcrum at the 40 cm mark by suspending an unknown mass m at the 20 cm mark.
Find the value of m.