Question #6db4b

1 Answer
Feb 24, 2016

Answer:

Weight of a man on moon surface will be #W/5#,
where #W# is his weight on Earth.

Explanation:

The weight of a body on any planet is the gravitational force between a planet and a body calculated by the formula
#W=gamma*(M_b*M_p)/R^2#
where
#gamma# is a gravitational constant,
#M_b# is a mass of a body,
#M_p# is a mass of a planet,
#R# is the distance between the center of a planet and a center of a body (which for all intents and purposes should be taken as the radius of a planet)

If we decrease #M_p# by a factor of #80# and decrease #R# by a factor of #4#, the gravitational force will change by a factor of #4^2/80=1/5#.