Physics - Mechanical Properties of Solids Question with Solution | TestHub
PhysicsMechanical Properties of SolidsElasticityMedium3 minCT48
PhysicsMediumsingle choice
Passage / Comprehension
For a massless rod of length l lies on a horizontal table and is pivoted at its midpoint. Balls 3m and m are fixed to its ends. A third ball 2m is tied to the m ball by a string of length l and is projected at speed v as shown; its perpendicular distance from the axle is 4l/5 when the string becomes taut.
The angular velocity of rod, just after the string becomes taut is
Options:
Answer:
A
Solution:
Conserve angular momentum about the axle during the string impulse.
The taut-string constraint gives ω=18v/(59l).
Stream:JEESubject:PhysicsTopic:Mechanical Properties of SolidsSubtopic:Elasticity
⏱ 3mℹ️ Source: CT48
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