The equations of the curves are and
.
Determine the points of intersection by plotting their graphs.
\Graph :
\(1). Draw the coordinate plane.
\(2). Graph the curves and
.
Observe the graph, the two curves intersect at the points and
.
.
Consider and
.
Consider and
.
Moment about - axis
of a planar lamina is defined as,
.
Where, is uniform density of a planar lamina.
Here value varies form
to
, so
and
.
Substitute ,
and limits of integral in the above formula.
Apply Integration :
\.
Moment about - axis
of a planar lamina is defined as,
.
Where, is Uniform density of a planar lamina.
Here value varies form
to
, so
and
.
Substitute ,
and limits of integral in the above formula.
Apply Integration :
\Find the values of :
Calculate :
Calculate :
Moments and center of mass
.