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Grade: Upto college level
        Given a right angled isosceles triangular plate of mass m and base l. The plate is attached to an axis at an apex angle of 90 degrees. The apex lies at origin and the base is parallel to x-axis. The moment of inertia about x-axis is:

1) ml^2/24
2)ml^2/12
3)ml^2/8
4)ml^2/6
6 years ago

Answers : (1)

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10 Points
							let axis of rotation pass through hypotenuse. considering rotation about hypotenuse u will see ki triange ke do partts se ek square ban jayege and hypotenuse square ka diagonal hoga.
we know square ke daigomal se pass axis ka mi=ml^2/6if mass of sq is m
now triangle ka mass sq ke mass ka half hoga to 
mi abt hypotenuse  =ml^2/12 
now apply perpendicular axis thm 
mi about base as well as perp is ml^2/24
						
6 years ago
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  • NCERT Solutions
  • Discussion Forum
  • Previous Year Exam Questions


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