physics

posted by .

A 190 kg object and a 490 kg object are separated by 0.400 m. At what position (other than an infinitely remote one) can the 35.0 kg object be placed so as to experience a net force of zero?
------------ m from the 490 kg mass

I do not understand how to attack this problem. pls help.

  • physics -

    call our mass m, the 35 does not matter, could be any amount.
    we are x meters from the 190 kg
    and
    we are (0.4 - x) meters from the 490 kg
    we have to be on the line between them so we are not pulled sideways
    so
    Fleft = G(190)m /x^2
    Fright = G(490)m/(.4-x)^2
    so for equal and opposite
    190/x^2 = 490/(.4-x)^2
    solve the resulting quadratic for x

  • physics -

    when i try and solve this i get 300x^2+152x-30.4

    how would i solve after this?

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. physics

    can an object be in equilibrium (the state in which the net force on an object is zero) if only one force acts on the object?
  2. physics

    An object in the vacuum of space orbits the earth at a fixed speed in a circular orbit several hundred miles above the earth. What can we conclude about the reaction force?
  3. physics

    An object in the vacuum of space orbits the earth at a fixed speed in a circular orbit several hundred miles above the earth. What can we conclude about the reaction force?
  4. physics

    An object in the vacuum of space orbits the earth at a fixed speed in a circular orbit several hundred miles above the earth. What can we conclude about the reaction force?
  5. physics

    An object in the vacuum of space orbits the earth at a fixed speed in a circular orbit several hundred miles above the earth. What can we conclude about the reaction force?
  6. physics

    An object in the vacuum of space orbits the earth at a fixed speed in a circular orbit several hundred miles above the earth. What can we conclude about the reaction force?
  7. physics

    Objects with masses of 190 kg and a 490 kg are separated by 0.380 m. (a) Find the net gravitational force exerted by these objects on a 57.0 kg object placed midway between them. N (b) At what position (other than infinitely remote …
  8. physics

    the object is traveling in a circle,which one of the statements are true. choose all that apply?
  9. Physics

    A 145-kg object and a 445-kg object are separated by 3.90 m. (a) Find the magnitude of the net gravitational force exerted by these objects on a 34.0-kg object placed midway between them. (N) (b) At what position (other than an infinitely …
  10. Physics

    Multiple Choice. If all of the forces acting on an object an object are balanced (net force is zero), then: a. The object's speed will decrease b. The object's direction of motion can change, but its speed cannot C. The object is ecperiencing …

More Similar Questions