What is gravitational constant and how to find it If it's given in a question

The gravitational constant, denoted by $G$, is an empirical physical constant used in the calculation of gravitational effects. It quantifies the strength of the gravitational force between two objects. It appears in Newton's Law of Universal Gravitation, which states that the force $F$ between two masses $m_1$ and $m_2$ separated by a distance $r$ is:

$$F = \frac{Gm_1m_2}{r^2}$$

The value of $G$ is approximately $6.674 \times 10^{-11} \text{ N} \cdot \text{m}^2/\text{kg}^2$.

If the gravitational constant is given in a question, you do not need to "find" it. Instead, you should use the specific value provided in the question for your calculations. If it is not given, you should use its standard approximate value:

$$G \approx \boxed{6.674 \times 10^{-11} \text{ N} \cdot \text{m}^2/\text{kg}^2}$$