Posted by Abby on Sunday, November 27, 2011 at 12:41pm.
a) 1/6 of the weight on Earth.
b) g and weight at the surface are proportional to M/R^2 of the attracting body (Earth or moon). But M is proportional to R^3, assuming uniform density. Therefore g is prooprtional to R. Earth would have to be 1/6 its present radius to have the same g value as the moon. That is less the moon's actual radius.
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