Engineering Mechanics - Moments of Inertia - Discussion
Discussion Forum : Moments of Inertia - General Questions (Q.No. 1)
1.
Determine the radius of gyration ky of the parabolic area.
Discussion:
12 comments Page 1 of 2.
Prabhu said:
1 decade ago
I want explanation.
(1)
Phani said:
1 decade ago
Can any one explain this?
(1)
Chandu said:
1 decade ago
Hai frnds i solve it........
Ky=root over Iy/A
Iy=moment of inertia with respect to y-axis
A=area
dI=dA*r^2 (r is radius)
dI=0.1(1600-x^2)x^2 dx
integrate both sides,limits are 0 to 40
and multiple with 2
we get
I=2730666
here dA=y dx(here y=0.1(1600-x^2))
integrate both sides, limits are 0 to 40
and multiple with 2
A=8533
substitute the values of I,A in Ky we get
Ky=17.89mm
Ky=root over Iy/A
Iy=moment of inertia with respect to y-axis
A=area
dI=dA*r^2 (r is radius)
dI=0.1(1600-x^2)x^2 dx
integrate both sides,limits are 0 to 40
and multiple with 2
we get
I=2730666
here dA=y dx(here y=0.1(1600-x^2))
integrate both sides, limits are 0 to 40
and multiple with 2
A=8533
substitute the values of I,A in Ky we get
Ky=17.89mm
Crazy man said:
1 decade ago
Ky=root over Iy/A
Iy=moment of inertia with respect to y-axis
A=area
dI=dA*r^2 (r is radius)
dI=0.1(1600-x^2)x^2 dx
Integrate both sides, limits are 0 to 40
And multiple with 2
we get
I=2730666
Here dA=y dx(here y=0.1(1600-x^2))
Integrate both sides, limits are 0 to 40
And multiple with 2
A=8533
Substitute the values of I, A in Ky we get
Ky=17.89mm
Iy=moment of inertia with respect to y-axis
A=area
dI=dA*r^2 (r is radius)
dI=0.1(1600-x^2)x^2 dx
Integrate both sides, limits are 0 to 40
And multiple with 2
we get
I=2730666
Here dA=y dx(here y=0.1(1600-x^2))
Integrate both sides, limits are 0 to 40
And multiple with 2
A=8533
Substitute the values of I, A in Ky we get
Ky=17.89mm
Malik said:
1 decade ago
How that I came?
Kwesiga Henry said:
1 decade ago
How is the area of the figure got?
Jaduo said:
10 years ago
I can't understand please help me!
Sai deep said:
10 years ago
Please give me explanation?
Pradeep said:
10 years ago
Area of parabola 4ah/3.
Kumar saim said:
9 years ago
You are correct @Chandu.
I'm also tried in the same way, it gives the same answer as yours.
I'm also tried in the same way, it gives the same answer as yours.
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