The force of gravitation between two point masses can be calculated using Newton's law of universal gravitation. The formula is:

$F = G \frac{m_1 \cdot m_2}{r^2}$

Where:

• $F$ is the gravitational force between the two masses,
• $G$ is the gravitational constant $(6.674 \times 10^{-11} \, \text{N} \, \text{m}^2/\text{kg}^2)$,
• $m_1$ and $m_2$ are the masses of the two objects (1 kg and 2 kg),
• $r$ is the distance between the two masses (1 meter).

Substituting the values:

$F = \left( 6.674 \times 10^{-11} \right) \times \frac{1 \times 2}{1^2} = 13.348 \times 10^{-11} \, \text{N}$

So, the gravitational force $F$ is $1.3348 \times 10^{-10} \, \text{N}$.

Would you like more details or have any questions?

Here are some related questions:

1. What is the significance of the gravitational constant?
2. How does the gravitational force change if the distance between the masses is doubled?
3. How would the force change if both masses were doubled?
4. How does gravitational force compare to other fundamental forces in nature?
5. What are some practical applications of Newton's law of gravitation?

Tip: Gravitational force is always attractive and acts along the line joining the two masses.