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deepak upadhyay Grade: 11
`        in right angled isosceles triangle ABC made up rods(each of mass m), right angled at C has length of AB=a, and another rod DB joining AC to B (at 30 degree with CB). and then its moment of inertia about B perpendicular to plane ABC is?`
6 years ago

## Answers : (1)

SAGAR SINGH - IIT DELHI
879 Points
```										Dear student,
Let an  element of mass consist of a vertical ribbon within the triangle, of  width dx, height y, and thickness w. With x representing the location of  the ribbon, show that y = hx/L. Show that the density of the material  is given by. = 2M/Lwh. Show that the mass of the ribbon is dm = yw dx =  2Mx dx/L2.

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6 years ago
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