Physics - Rotation Question with Solution | TestHub

PhysicsRotationMiscellaneousMedium3 minQB

PhysicsMediumsingle choice

Passage / Comprehension

For Q14-Q16, each object of mass m initially has centre speed v0 and angular speed v0/R while slipping on a rough plane.

(I) ring: final KE zero; slip time v0/(μg).

(II) disc: final KE mv0²/12; slip time 2v0/(3μg).

(III) solid sphere: final KE 9mv0²/70; slip time 4v0/(7μg).

(IV) spherical shell: final KE mv0²/30; slip time 4v0/(5μg).

Name the object has minimum loss in kinetic energy during slipping, its kinetic energy after slipping ceases and the time tell slipping ceases :-

Answer:

Solution:

Apply the rolling, torque and energy relations to the stated geometry.

Substitution and simplification give the marked answer C.

Stream:JEESubject:PhysicsTopic:RotationSubtopic:Miscellaneous

⏱ 3mℹ️ Source: QB

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