Hey guys, I'm having some trouble with the energy topic. So the question is: "Calculate the gravitational potential of earth and of Mars. Then use that information to calculate the gravitational potential energy required to life yourself completely off each planet" So I got the gravitational Potential on earth to -62.5 MJ/kg and on Mars it is 12.7 MJ/kg. So this is the first part of the questions, I don't get how you calculate the energy required to lift my enitre mass (which is about 70kg) off each planet. I would really appreciate it if anyone could help me out.