MHT CET202314 May 2023Morning ShiftPhysicsMotion in Two DimensionsActual
A particle moves around a circular path of radius ' r ' with uniform speed ' V '. After moving half the circle, the average acceleration of the particle is
Options
- AV ^2 r
- B2 ~V ^2 r
- C2 ~V ^2 r
- DV ^2 r
Correct answer
C. 2 ~V ^2 r
Step-by-step solution
At end points of the half revolution magnitude of the velocity is same but it directs in opposite direction. array ll & V=V-(-V) & V=2 V array Time taken to complete the half revolution is t = r V Average acceleration is, a= V t = 2 ~V r V a= 2 V^2 r