The top of a smooth inclined plane of length $20 \sqrt{2} \mathrm{~m}$ is connected to the edge of a well of…
The top of a smooth inclined plane of length $20 \sqrt{2} \mathrm{~m}$ is connected to the edge of a well of diameter $40 \mathrm{~m}$ making an angle $45^{\circ}$ as shown in figure. A body is projected along the inclined plane with a velocity ' $u$ '. If the body crosses the well without falling in it then the minimum value of ' $\mathrm{u}$ ' is $\left(\mathrm{g}=10 \mathrm{~ms}^{-2}\right)$
