Regional Jet 200 ER/LR (CRJ200)
Flight Crew Air Transport Pilot (ATP)
Deviation - Speed All Types; Inflight Event / Encounter Wake Vortex Encounter
General None Reported / Taken
Environment - Non Weather Related; Procedure
On our descent on the CHOPI arrival into Atlanta; we were 10 miles in trail of a Boeing 777. We were advised by ATC 'caution wake turbulence.' Both the Captain and I were in visual contact with the B777 and both agreed that we were above its glide path on the arrival. We were directed to slow from 210 knots to 180 knots; and flaps were either set to 8 or 20 degrees; I cannot remember. This was likely to prevent us from getting too close to the B777. As we were slowing; our aircraft entered the B777's wake turbulence; causing a stick shaker and autopilot disconnect.I am writing this report primarily to describe the events that surrounded a stick shaker occurrence. The aircraft was never in an undesired aircraft state; and we were configured properly (as far as flap settings are concerned) for our airspeed. We were not anywhere close to entering an aerodynamic stall; but the severity of the turbulence induced a stick shaker activation.
CRJ-200 First Officer reported the stick shaker activated while encountering wake turbulence on approach to ATL in trail of a B777.