earth science

posted by .

Which one of the following objects will have the greatest force of gravity to the Earth at its surface

. A large book
B. A house

C. A human being

D. An average-size car
i don't get it??

  • earth science -

    Well I think that the question means which of the follwing objects will have the greatest force of weight to the earth at its surface. I think the answer is a house

  • earth science -

    F = G m Mearth / Radius earth^2
    all the same for each object except m
    so the biggest m gives the biggest gravitational force
    Houses generally have more mass than even the largest cars.

  • earth science -

    Is this a common formula used

  • earth science -

    Yes, that is Newton's law of gravity

  • earth science -

    force between two masses equals Newton's gravitational constant times the product of the two masses divided by the square of the distance between them.

  • earth science -

    The gravitational constant G = 6.67259 * 10^-11 Newton meters^2/kg^2

  • earth science -

    Mass of earth = 5.98 * 10^24 kilograms
    radius of earth = 6.38 * 10^6 meters

  • earth science -

    oh, i was just asking, because i really don't get any of this stuff

  • earth science -

    That is the famous one though, about the mythical apple falling on Newton's actual head and him coming up with the law of gravity as a result.

  • earth science -

    oh I heard about the one, but I can't remember but it was about a crown. By the way I'm only in grade 8, these things r way toooooo difficult 4 me

  • earth science -

    Well, your answer was correct anyway :)

  • earth science -

    yeah, I guess. :-\

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Physics

    Calculate the force of gravity on a spacecraft 19200 km (3 earth radii) above the Earth's surface if its mass is 1600 kg. Hint: At three earth radii from the surface of the Earth, the gravity force (weight) of the spacecraft will be …
  2. science

    The words in the bank are air resistance,time, zero, inertia, mass, direction, friction, rolling friction, and less. See if I did them right and if I didn't write anything on the blank, I need help with it. THANKS!!!!!!!!!!!!!!!! 10. …
  3. science

    One factor determining the effect of gravity on objects is their.....?
  4. physics

    The force of gravity at Earth's surface on an astronaut is 634N. What is the force of gravity on the same person at each of the following distances, in multiples of Earth's radius, from the centre of Earth?
  5. Physics

    a. 2 objects each of mass 200 kg and 500 kg are separated by 50 cm. Where body of mass 20 kg should be placed so that the resultant force of gravity experienced by objects equal to zero?
  6. science. -_-

    Okk so im not asking for answers, i just need somone to expplain this homework to me! I don't get it what so ever. So the homework tittle is Weight in space. So it has a whole discripition in wjich i will write dpwn for you. The paper …
  7. Physics

    Calculate the percentage of Earth’s gravitational force on the ISS astronauts while orbiting at an altitude of 248 miles above Earth’s surface. To do this, compare the gravitational force on an orbiting astronaut to the force on …
  8. science

    Which statement best describes Newton’s Law of Universal Gravitation?
  9. science

    Large craters are visible on the moon but not common on the earth's surface. Which of the following is the beady explanation of why large craters are not evident in the earth's surface in photos taken from space. A.three quarters of …
  10. Physical Science

    Many people mistakenly believe that the astronauts who orbit Earth are "above gravity." Earth's mass is 6×1024kg, and its radius is 6.38×106m (6380 km). Use the inverse-square law to find a height above Earth's surface at that the …

More Similar Questions