Find the volume V of the solid obtained by rotating the region bounded by the given curves about the specified line.y2 = 2x, x = 2y; about the y-axisV = 768π
Question
Find the volume V of the solid obtained by rotating the region bounded by the given curves about the specified line.y2 = 2x, x = 2y; about the y-axisV = 768π
Solution
To find the volume of the solid obtained by rotating the region bounded by the curves y^2 = 2x and x = 2y about the y-axis, we can use the method of cylindrical shells.
The formula for the volume of a solid of revolution using cylindrical shells is V = ∫[a,b] 2πrh dx, where r is the radius of the shell and h is the height of the shell.
Step 1: Solve the equations y^2 = 2x and x = 2y for x to get x = y^2/2 and x = 2y respectively.
Step 2: The region bounded by these curves is a triangle with vertices at (0,0), (0,2), and (2,2). We can see that the radius of the shell is x and the height of the shell is 2y - y^2/2.
Step 3: Substitute these values into the formula for the volume of a solid of revolution to get V = ∫[0,2] 2πx(2y - y^2/2) dx.
Step 4: Evaluate the integral to get V = 768π cubic units.
Similar Questions
Find the volume V of the solid obtained by rotating the region bounded by the given curves about the specified line.y = x, y = 0, x = 2, x = 6; about x = 1
The region bounded by the given curves is rotated about the specified axis. Find the volume V of the resulting solid by any method.y = −x2 + 6x − 8, y = 0; about the x-axisV = 649.07π
Find the volume V of the solid obtained by rotating the region bounded by the given curves about the specified line.y = x − 1, y = 0, x = 8; about the x-axisV = 95π
Find the volume V of the solid obtained by rotating the region bounded by the given curves about the specified line.y = 27x3, y = 0, x = 1; about x = 2
Find the volume of the solid obtained by rotating the region in the first quadrant enclosed by the curves y=tanx and y= 2 cosx, for 0≤x≤ 2π , about the line y=−1
Upgrade your grade with Knowee
Get personalized homework help. Review tough concepts in more detail, or go deeper into your topic by exploring other relevant questions.