Most Important Selected Qs for JEE AdvancedPhysicsWork, Power and Energy
A light rod of length L , is hanging from the vertical smooth wall of a vehicle moving with acceleration 3 ~g having a small mass attached at it's one end is free to rotate about an axis passing through the other end. The minimum velocity given to the mass at it's equilibrium position so that it can complete vertical circular motion is
Options
- A5 gL
- B4 gL
- C8 gL
- Dnone of these
Correct answer
C. 8 gL
Step-by-step solution
Conservation of energy 1 2 mv ^2- mg 2 = mg 2 + m 3 (2 3 2 ) g v = 8 ~g