The ratio of students who play musical instruments to students who play sports is 3:20. if there are 40 students who play sports
1 answer:
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The moment of inertia about the y-axis of the thin semicircular region of constant density is given below.
Any item that can be turned has rotational inertia as a quality. It's a scalar value that indicates how complex it is to adjust an object's rotational velocity around a certain axis.
Then the moment of inertia about the y-axis of the thin semicircular region of constant density will be
x = r cos θ
y = r sin θ
dA = r dr dθ
Then the moment of inertia about the x-axis will be
On integration, we have
Then the moment of inertia about the y-axis will be
On integration, we have
Then the moment of inertia about O will be
More about the rotational inertia link is given below.
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Answer:
x = 10
Step-by-step explanation:
To find x, write a proportion between the side lengths for the similar triangles in the figure.
To solve, cross multiply and isolate x.
(x+5)(12) = 18(x)
12x + 60 = 18x
60 = 6x
10 = x