A bob is attached to one endof a string and other endof which is fixed at peg A.The bob is taken to a positionwhere string makes an angleof 30° with the horizontal. On the circular pathof the bob in vertical plane there is peg B at asymmetrical position with respect to the positionof bob as shown in the figure. If vc and va be theminimum speeds in clockwise and anticlockwisedirections respectively, given to bob in order tohit the peg B, then ratio vc : va is equal to
nkc , 6 Years ago
Grade 11
