3. The masses of crates A and B are 50 and 30 kg, respectively. The coefficient of static friction between the crates and the floor is 0.3 and coefficient of kinetic friction is 0.22. Crates are initially in rest, but starting from t = 0, they will be pushed as pictured by a horizontal force P. Calculate the velocity of the crates after t = 5 s, if a) P = 200 N b) P = 500 N c) P = 40t² A B Her
3. The masses of crates A and B are 50 and 30 kg, respectively. The coefficient of static friction between the crates and the floor is 0.3 and coefficient of kinetic friction is 0.22. Crates are initially in rest, but starting from t = 0, they will be pushed as pictured by a horizontal force P. Calculate the velocity of the crates after t = 5 s, if a) P = 200 N b) P = 500 N c) P = 40t² A B Her
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Transcribed Image Text:3. The masses of crates A and B are 50 and 30 kg,
respectively. The coefficient of static friction
between the crates and the floor is 0.3 and
coefficient of kinetic friction is 0.22. Crates are
initially in rest, but starting from t = 0, they will be
pushed as pictured by a horizontal force P. Calculate
the velocity of the crates after t = 5 s, if
a) P = 200 N
b) P = 500 N
c) P = 40t2
A
ther
B
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