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Asked by sarveshvibrantacademy | 14 May, 2019, 10:21: AM
answered-by-expert Expert Answer
Distance travelled by disc B in one complete revolution around disc A is equal to the circumference of the disc A
Therefore
Distance travelled = 2 πR
For 2 straight pi radians distance covered by disc B is 4 πR
Therefore for 2 πR length travelled 
Angle should be fraction numerator 2 πR over denominator 4 πR end fraction cross times 2 straight pi equals straight pi
Answered by Utkarsh Lokhande | 14 May, 2019, 14:28: PM
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