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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?

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?

Grade:11

1 Answers

SAGAR SINGH - IIT DELHI
879 Points
12 years ago

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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Askiitians Expert

Sagar Singh

B.Tech, IIT Delhi

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