Physics - Rotation Question with Solution | TestHub
PhysicsRotationMiscellaneousMedium3 minQB
PhysicsMediummultiple choice
An eccentric cylinder used in vibrator has a mass of 18 kg and rotates about an axis 50 mm from its geometric centre and perpendicular to the top view as shown in diagram. If the magnitude of and are and respectively at the instant shown, then choose the CORRECT option(s) :- (The whole system is kept in gravity free region)
Options:(select one or more)
Answer:
A, B, C, D
Solution:
The centre has radial acceleration rω²=0.05×100=5 m/s² and tangential acceleration rα=0.05×2=0.1 m/s².
Thus force components have magnitudes 18×5=90 N and 18×0.1=1.8 N.
Using the cylinder inertia and parallel-axis theorem gives the required hinge torque 0.495 N m.
From the shown directions, both hinge-force components are positive.
Stream:JEESubject:PhysicsTopic:RotationSubtopic:Miscellaneous
⏱ 3mℹ️ Source: QB
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