Posted by **tina** on Sunday, November 30, 2008 at 3:45pm.

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 -
**Damon**, Sunday, November 30, 2008 at 3:50pm
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 -
**tina**, Sunday, November 30, 2008 at 3:59pm
when i try and solve this i get 300x^2+152x-30.4

how would i solve after this?

## Answer this Question

## Related Questions

- physics - Objects with masses of 190 kg and a 490 kg are separated by 0.380 m. (...
- Physics - A 2.00-kg object is hanging on a 1.1m string. The object is pulled ...
- physics - the object is traveling in a circle,which one of the statements are ...
- physics - Question: Object A is moving at a maximum speed of 6m/s towards Object...
- Calculus - An object is traveling along the x axis so that its speed is given by...
- Calculus - An object is traveling along the x axis so that its speed is given by...
- Physics - An object is placed to the left of a lens, and a real image is formed ...
- Physics - Consider the following distribution of objects: a 4.00-kg object with...
- Physics - Consider the following distribution of objects: a 4.00-kg object with ...
- Physics - Consider the following distribution of objects: a 4.00-kg object with ...

More Related Questions