Physics - Rotation Question with Solution | TestHub
PhysicsRotationMiscellaneousMedium3 minCT47
PhysicsMediumsingle choice
A solid spherical ball of mass 1 kg and radius 1m is hit horizontally at a height h above ground such that it starts rolling purely on the smooth ground. What is value of h ?
Options:
Answer:
A
Solution:
Impulse J gives v=J/m and angular speed ω=Jh/I.
Pure rolling requires v=ωR. For a solid sphere I=2mR²/5, hence h=2R/5 for hit relative to centre, or 7R/5 above ground.
Stream:JEESubject:PhysicsTopic:RotationSubtopic:Miscellaneous
⏱ 3mℹ️ Source: CT47
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