Q.

If the radius of curvature of the path of two particles of same mass are in the ratio 3 : 4, then in order to have constant centripetal force, their velocities will be in the ratio of     [2024]

1 3:2  
2 1:3  
3 3:1  
4 2:3  

Ans.

(1) 

       Given m1=m2 and r1r2=34

       As centripetal force F=mv2r

       To have constant centripetal force, F1=F2

       m1v12r1=m2v22r2v1v2=r1r2=32