Himaja
Last Activity: 10 Years ago
The gravitational potential at a point P in the gravitational field is defined as the work required to bring a unit mass from infinity to the point P in the field.
Hence the problem is solved if potential at P is calculated.
Consider a coaxial and concentric ring of radius y and thickness dy
Find potential at P due ti this element
Integrate within proper limits. For y the limits being 3r and 4r.
Required W = - (potential)
