A centimeter ruler, balanced at its center point, has two coins placed on it, as shown in the figure. (Figure 1)One coin, of mass M1=10g , is placed at the zero mark; the other, of unknown mass M2 , is placed at the 4.7 cm mark. The center of the ruler is at the 3.0 cm mark. The ruler is in equilibrium; it is perfectly balanced. Figure1 of 1 The figure shows a centimeter ruler of length 6 centimeters placed horizontally. The ruler is supported by a fulcrum at the midpoint. Two coins of masses M 1 and M 2 are placed on the ruler. A coin of mass M 1 is placed so that its center is at the zero mark. A coin of mass M 2 is placed so that its center is at the 4.7-centimeter mark. The midpoint of the ruler is at the 3 centimeters mark. Part A Does the pivot point (i.e., the triangle in the diagram upon which the ruler balances) exert a force on the ruler? Does it exert a nonzero torque about the pivot? Choose the correct series of answers to these two questions. yes/yes no/no yes/no no/yes Request Answer Part B Complete previous part(s) Part C Find the mass M2 . Express your answer for the unknown mass numerically, in grams, to two significant digits. View Available Hint(s)for Part C Activate to select the appropriates template from the following choices. Operate up and down arrow for selection and press enter to choose the input value typeActivate to select the appropriates symbol from the following choices. Operate up and down arrow for selection and press enter to choose the