104k views
0 votes
Find the volume V of the solid obtained by rotating the region bounded by the given curves about the specified line. y = 1/49x², x = 5, y = 0; about the y-axis

User Shorena
by
7.5k points

1 Answer

3 votes

Final answer:

The question involves using the disk method to find the volume of a solid of revolution, formed by rotating a region bounded by given curves around the y-axis, and it can be solved by setting up and evaluating an integral.

Step-by-step explanation:

The question asks to find the volume V of the solid obtained by rotating the region bounded by the curves y = 1/49x², x = 5, y = 0 about the y-axis. This is an application of the method of solids of revolution, specifically using the disk method. We integrate across the x-axis since we are rotating around the y-axis and the functions are functions of x.

Step-by-step, the solution involves first setting up the integral:
∫ₓ₀⁵ (π (1/49x²)²) dx, which represents the sum of the areas of the infinitesimally thin disks from x = 0 to x = 5. Then, we compute this integral using basic integration techniques. The final volume is found after evaluating the integral.

In the context of the provided information, think of each disk having a cross-sectional area (A) and integrating along the height (x-axis in this case) is similar to finding the average depth (h) in the context of finding volumes of reservoirs.

User Niroshi
by
7.9k points