AP EAMCET202420 May 2024Evening ShiftPhysicsWork, Power and EnergyActual
A small disc is on the top of a smooth hemisphere of radius ' R '. The smallest horizontal velocity ' V ' that should be imparted to the disc so that disc leaves the hemisphere surface without sliding down is (there is no friction)
Options
- AV= g^2 R
- BV= 2 g R
- CV= g R
- DV= g / R
Correct answer
C. V= g R
Step-by-step solution
At the top of hemisphere, mg - N = mv ^2 R For the disc leaves the hemisphere, N =0 mg = mv ^2 R v = gR