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Physics - Rotation Question with Solution | TestHub

PhysicsRotationCalculation of M.I.Hard2 minPYQ_2022

PhysicsHardsingle choice

Three particles, each of mass ' $m$ ' grams situated at the vertices of an equilateral $△ A BC$ of side ' $a$ ' $cm$ (as shown in the figure). The moment of inertia of the system about a line $AX$ perpendicular to $AB$ and in the plane of $ABC$ in $g - cm^{2}$ units will be

Options:

Answer:

Solution:

$I = ma^{2} + m (a cos 6 0^{\circ})^{2} = m a^{2} + \frac{ma ^{2}}{4} = \frac{5 ma ^{2}}{4}$

Stream:WBJEESubject:PhysicsTopic:RotationSubtopic:Calculation of M.I.

⏱ 2mℹ️ Source: PYQ_2022

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