K=0.5 mu×u
K=2200J no matter the direction
You should disconnect all wires from the circuit or make sure the switch is off or batteries are out
-- pick a planet from the table
-- take it's mass and radius from the table, and plug them into the big ugly formula above the table
-- do the arithmetic with your pencil or your calculator. The answer is the acceleration of gravity on the planet you picked. Write it down so you don't lose it.
-- do the same for the other 3 planets in the table
