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:An object is placed 10cm in front of a plane mirror.…Masses, m¹ and m² at the 20-cm and 65-cm marks…The diagram above illustrates a uniform metre rule…The diagram shows a uniform meter rule AB which…A uniform solid cube material 10cm on each side of…