The friction force applied by ground on block b is. block b is moving

1.	The friction force applied by ground on block b is. block b is moving with the v =10m/s^2
Answer» The BLOCKS move with constant velocity. THUS the net force acting on the system is 0. External force acting on A 20N. Since the net force acting on B is 0, FRICTION must be 20N in opposite direction of external force. External force acting on A is 0 and net force on A is 0. Hence friction on A DUE to B is 0. Hence, ANSWER is 0.

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The friction force applied by ground on block b is. block b is moving with the v =10m/s^2

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