A student got the following measured values: the mass of the steel ball was 60 grams; the average value of h (the height of the metal block raised in method 1) was 4.0 cm; the y value (the height in method 2) was 100 cm; and the average x value (the distance in method 2) was 200 cm. Use the above information to find the mass of the metal block M in units of grams