An answer please would be greatly appreciated: A bicycle chain is wrapped around

Question

An answer please would be greatly appreciated:
A bicycle chain is wrapped around a rear sprocket (r=0.039m)and a front sprocket (r=0.10m). The chain moves with a speedof 1.4 m/s around the sprockets, while the bike moves at a constantvelocity. Find the magnitude of the acceleration of a chainlink that is in contact with (a) the rear sprockets and (b) neithersprocket and (c) the front sprocket.
Thanks in advance!
A bicycle chain is wrapped around a rear sprocket (r=0.039m)and a front sprocket (r=0.10m). The chain moves with a speedof 1.4 m/s around the sprockets, while the bike moves at a constantvelocity. Find the magnitude of the acceleration of a chainlink that is in contact with (a) the rear sprockets and (b) neithersprocket and (c) the front sprocket.
Thanks in advance!

Explanation / Answer

a) the magnitude of the acceleration of a chain link thatis in contact with the rear sprockets is ac = v2/r         =(1.4m/s)2/0.039m          =--------- b) without sprocket the speed of chain = 0 m/s so , ac = 0 c) the magnitude of acceleration with front sprocketis     ac = v2/rf          =(1.4m/s)2/0.10m           =------------          =(1.4m/s)2/0.10m           =------------

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