Physics - Rotation Question with Solution | TestHub
PhysicsRotationMiscellaneousMedium2 minQB
PhysicsMediumsingle choice
Two vertical walls are 2 m apart. Wall A is smooth; wall B has coefficient of friction . A uniform rod touches both walls. Find the greatest possible rod length.
Options:
Answer:
C
Solution:
Let the rod make angle θ with the horizontal; its horizontal projection is 2 m.
Using force and torque equilibrium with limiting friction μ=0.5 gives the maximum vertical separation as 1 m.
Therefore Lmax=√(2²+1²)=√5 m.
Stream:JEESubject:PhysicsTopic:RotationSubtopic:Miscellaneous
⏱ 2mℹ️ Source: QB
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