Question #a4bc2

1 Answer
Jun 24, 2015

Answer:

I found #500N#

Explanation:

Considering that the weight of the astronaut is given as:
#W=700N=m_a*g=m_a*[G*m_(earth)/R_(earth)^2]# where:
#G# is the Universal Gravitational Constant:
#R_(earth)# is the earth's radius;
#m_(earth)# is the earth's mass.

Now if we use the data for the other planet we get:
#m=3m_(earth)#
#R=2R_(earth)#
#W=m_a*g_(?)=m_a*[G*(3m_(earth))/(4R_(earth)^2)]#
so:
#m_a*[G*m_(earth)/R^2]*3/4=3/4*700=525~~500N#