If gravitational field is given by `E -x hat(i) - 2 y^(2) hat(j)`. When gravitational potential is zero ar (0,0) find potential cat (2,1)

Explanation

To find the gravitational potential at the point (2, 1) given that the gravitational potential is zero at the origin (0, 0), we will follow these steps:

### Step 1: Understand the Gravitational Field
The gravitational field is given by:
\[ \mathbf{E} = -\hat{i} - 2y^2 \hat{j} \]
This means:
- The x-component of the gravitational field \( E_x = -x \)
- The y-component of the gravitational field \( E_y = -2y^2 \)
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