The units of the area moment of inertia are derived directly from its defining integral, I=∫r2dA. The differential area element dA has units of length squared (e.g., m2).
Conditions: Lengths are measured in meters in the specific example.; The integral represents an area moment of inertia.
The units of the area moment of inertia are derived directly from its defining integral, I=∫r2dA. The differential area element dA has units of length squared (e.g., m2).
Conditions: Lengths are measured in meters in the specific example.; The integral represents an area moment of inertia.
The area moment of inertia about a specific axis is defined by integrating the square of the perpendicular distance from that axis over the entire area. For the y-axis, the perpendicular distance from any differential area element to the axis is the horizontal coordinate x.
Conditions: The moment is computed over a planar area in the xy-plane.; The axis of interest is either the x-axis or the y-axis.; The distance is measured perpendicularly from the axis to the differential area element.
The area moment of inertia about a specific axis is defined by integrating the square of the perpendicular distance from that axis over the entire area. For the y-axis, the perpendicular distance from any differential area element to the axis is the horizontal coordinate x.
Conditions: The moment is computed over a planar area in the xy-plane.; The axis of interest is either the x-axis or the y-axis.; The distance is measured perpendicularly from the axis to the differential area element.
The final numerical value of the area moment of inertia Iy for the specific shaded region about the centroidal y-axis is approximately 0.762 m4. This value is obtained by evaluating the definite integral ∫02x2(2−2x1/2)dx, which simplifies to 324−2(72)23.5.
Conditions: The region is bounded by y=2 (top) and y=2x1/2 (bottom) from x=0 to x=2.; The axis is the centroidal y-axis.; Units are in meters.
The final numerical value of the area moment of inertia Iy for the specific shaded region about the centroidal y-axis is approximately 0.762 m4. This value is obtained by evaluating the definite integral ∫02x2(2−2x1/2)dx, which simplifies to 324−2(72)23.5.
Conditions: The region is bounded by y=2 (top) and y=2x1/2 (bottom) from x=0 to x=2.; The axis is the centroidal y-axis.; Units are in meters.