Comment Comment by michaelgburton Simpler to use the potential energy formula, surely.E = mghm = E/ghm = 3.6 * 10^6 J / (9.8 m/s^2 * 10m) = 3.6735 * 10^4 kg parent michaelgburton 1 year ago
E = mgh
m = E/gh
m = 3.6 * 10^6 J / (9.8 m/s^2 * 10m) = 3.6735 * 10^4 kg