**Question: What is the dimensional formula of gravitational constant (G)?**

**[M]^-1 [L]^3 [T]^-2**- [M] [L]^3 [T]^-2
- [M]^-1 [L]^2 [T]^-1
- [M] [L] [T]^-1

**Answer:** A**) [M]^-1 [L]^3 [T]^-2**

## Dimensional Formula of Gravitational ConstantSolution:

The dimensional formula of the gravitational constant, denoted as “G,” is an essential parameter in physics, used to describe the strength of the gravitational force between two objects.

**Here’s a breakdown of the dimensions used in this formula:**

- [M] represents mass, which is measured in kilograms (kg).
- [L] stands for length, which is typically measured in meters (m).
- [T] denotes time, measured in seconds (s).

The formula [M]^-1 [L]^3 [T]^-2 signifies that the gravitational constant has units of kilograms to the power of negative one, meters cubed, per second squared. This dimensional formula allows scientists and engineers to incorporate G into various equations, such as **Newton’s law** of universal gravitation, which relates the gravitational force between two objects to their masses and the distance between them. Understanding the dimensional formula of G is fundamental to making accurate calculations in gravitational physics.

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