# physics grav fields

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#1
Im stuck on 3 b part 2

how do u get the equation? i know that gpe=mgh
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1 year ago
#2
(Original post by fiftythree)
Im stuck on 3 b part 2

how do u get the equation? i know that gpe=mgh
m*g1*h1 = m*g2*h2
So h2 = g1*h1/g2 = (9.81/1.7)*h1

Consider an average person, their CoM travels a bit more than h1 = 1m to clear 2m on earth, you can justify h2 ~ 7m.
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