Start Free Mock LoginAlready registered? Login here

Physics - Rotation Question with Solution | TestHub

PhysicsRotationCalculation of M.I.Medium2 minQB

PhysicsMediumsingle choice

AB and CD are two identical rods each of length L and mass M joined to form a cross. Find the M.I. of the system about a bisector of the angle between the rods (XY)

Options:

Answer:

Solution:

Each rod makes 45° with XY and passes through the axis at its centre

$I_{ro d} = \frac{M L ^{2}}{12} sin^{2} 4 5^{\circ} = \frac{M L ^{2}}{24}$

Two rods

$I = 2 \times \frac{M L ^{2}}{24} = \frac{M L ^{2}}{12}$

Answer: A

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

⏱ 2mℹ️ Source: QB

Doubts & Discussion

Loading discussions...