City's Champions League challenge looks doomed to failure after a controversial and frustrating 2-2 draw with Ajax in midweek.
Roberto Mancini's men must now win their remaining two group games and hope other results go in their favour to avoid a premature exit for a second successive season.
They will switch their attention back to their Barclays Premier League title defence as Tottenham visit the Etihad Stadium this weekend and Platt has no concerns about the players' state of mind.
Platt said: "Players are resilient animals and people don't give them credit for that.
"They think that players get affected and things like that.
"Disappointment or any pleasure lasts a very short time because immediately there's another game coming your way and the boys have got to put their boots back on again.
"This is the first day we've had back when we're all together and my experience would tell me that that will happen after the next game too."
City's form has not reached the heights of last season but they remain the only unbeaten side in the Premier League and are well placed in a leading pack with Manchester United and Chelsea.
Their defensive frailties were exposed again by Ajax on Tuesday but they have kept three clean sheets in their last four league games.
To build on that record they will need to quell the threat of Tottenham's in-form frontman Jermain Defoe, who scored a hat-trick in a Europa League win over Maribor on Thursday.
The 30-year-old is a player former England Under-21 coach Platt is well aware of.
Platt said: "He is potent. Defoe will always score goals.
"He could go six or seven games without scoring but you know if he does there is a glut coming because his stats tell you he scores goals.
"He has done all his career, ever since he was a young kid.
"I have had him in an under-21 team and training. He will get efforts on goal and he can finish.
"He is 5ft 3in - he'll have pop at me for that - but a cross comes in and he gets a header in the six-yard box.
"When a ball comes into the box he knows how to finish, he knows what to do.
"He has very early pictures in his mind about how he is going to score, no matter what angle it is.
"His first goal on Thursday was just an exceptional finish. He had the picture long before he got the ball."
Spurs lost to Wigan in their last league outing but remain a team with plenty of attacking quality, as seen when they beat Manchester United at Old Trafford in September.
Platt said: "It'll be very difficult, very tough.
"What Tottenham have got is over the years, with what Harry (Redknapp) has created and Andre Villas-Boas has added to and developed, a group of young, energetic players that can harm you, can score a goal in an instant.
"They've got several individuals who can turn a game in an instant and it becomes very difficult because of that.
"They change their team but they are dangerous.
"Gareth Bale is Gareth Bale - you know he is going to create chances, you know he is going to get the ball in a game, you know he is good one v one.
"He will get crosses over, he is direct, quick.
"(Aaron) Lennon on the other side is the same and the two full-backs will keep coming up.
"They will commit players forward when they have the ball, players who when in your final third can cause problems and score goals, no matter how well you defend.
"You look at them as a collective and you feel as though there are goals in their team."
City's much-missed playmaker David Silva is back in training after a month out with a hamstring injury and has a chance of featuring. Defender Joleon Lescott is also back in contention after a back problem.