A uniform metre rule of mass 90g is provided at the 40cm mark. If the rule is in equilibrium with an unknown mass m placed at the 10cm mark and a 72g mass at the 70cm mark, determine M by Sunday | May 23 | Physics WAEC | 0 comments A. 72g B. 102g C. 298g D. 504g Correct Answer: Option B B. 102g Users Also Read These:A uniform bar AB is balanced on a knife-edge which…The diagram above illustrates a uniform metre rule…In the diagram above, AB represents a uniform rod of…An object of heights 5cm is placed at 20cm from a…An object of height 2.5cm is placed 20cm from a…