mass of the object = 1000 kg height = 146 meter acceleration due to gravity = 9.8 m/s^2 but for easy calculation we will take acceleration due to gravity as = 10 m/s^2 So for this , W = 1000 x 10 x 146 W = 1460000 J W = 1.46 x 10^6 J answer is = 1.46 x 10^6J
