phy.

posted by .

check my understanding please.

Larry weighs 300 N at the surface of the earth. what is the weight of the earth in the gravitational field of Larry?
-would it still be 300 N

an astronaugt lands on a planet that has twice the mass as earth and twice the diameter. how does the astronaut weight differ from that on earth?
-his weight on earth would be less

if the moon pulls the earth as strongly as the earth pulls the moon, why doesnt the earth rotate around the moon, or why don't both rotate around a point midway between them?
-is it because they are in orbit and have a foce field

  • phy. -

    2) Isn't gravity force= GMm/d^2

    3) Where is the center of mass for Earth/Moon. ISn't the center of mass what they both rotate around?

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. phy.

    Larry weighs 300 N at the surface of the earth. what is the weight of the earth in the gravitational field of Larry?
  2. physics help

    Larry weighs 300 N at the surface of the earth. what is the weight of the earth in the gravitational field of Larry?
  3. Physics

    Given that the Earth's radius is 6.37x10^6 m and taking the earth's gravitational field at its surface to be 9.81N/kg, find the gravitational potential at the Earth's surface.
  4. phy

    What is the distance from the Earth's center to a point outside the Earth where the gravitational acceleration due to the Earth is 1/12 of its value at the Earth's surface?
  5. physics

    As you walked on the moon, the earth’s gravity would still pull on you weakly and you would still have an earth weight. How large would that earth weight be, compared to your earth weight on the earth’s surface?
  6. Physical Science

    the planet Jupiter is more than 300 as massive as earth. But a body would scarecly weighs 3 times as much on the surface of Jupiteras it would on the surface of the earth. Can you think of an explanation for why this is so?
  7. Physics

    At the heighest point on earth, the distance to the center of the earth is approximately equal to 1.0014 times the radius of the earth. What would be in N/kg the magnitude of the gravitational field (g) due to the earth at that position?
  8. physics

    Joe has a weight of 850 N (about 193 lb) when he is standing on the surface of the Earth. What would his weight (the gravitational force due to the Earth) be if he tripled his distance from the center of the Earth by flying in a spacecraft?
  9. phy

    (Q1)At what altitude above the earth's surface would the acceleration due to gravity be 4.9m/s-2?
  10. science

    A meteorite weighs 300 Newtons on the moon. the moons force of gravity is 1/6 that of earth. what is the meeorites weight on earth?

More Similar Questions