1- Two spherical masses separated by a distance of 10.0 meters from center to ce
ID: 1325116 • Letter: 1
Question
1-
Two spherical masses separated by a distance of 10.0 meters from center to center, experience a gravitational force of 80 ?N. What would be the force between them (in micronewtons) if the distance is cut in half to 5.00 meters?
2-
Two spherical masses separated by a distance of 10.0 meters from center to center, experience a gravitational force of 40 ?N. What would be the force between them (in micronewtons) if the distance is doubled to 20.0 meters?
3-
What is the magnitude of the gravitational force between two 4,000-kg bodies that are 7 m apart?
4-What is the magnitude of the gravitational force between two 8,500-kg bodies that are 6 m apart?
Explanation / Answer
F = G*m1*m2/d^2
1)
for half distance ,
force is 4 time the old force
Fnew = 4 * 80 uN
Fnew = 320 uN
the new force is 320 uN
2)
for double distance , force is 1/4
Fnew = 40/4
Fnew =10 uN
the new force is 10 uN
3)
Force = G*4000^2/7^2
Force = 22.05 uN
the force between masses is 22.05 uN
4)
Force = G * 8500^2 /(6^2)
Force = 135.5 uN
the force between the masses is 135.5 uN
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