Question: Two packages are placed on an incline as shown. The coefficients of friction are s = 0.30 and k = 0.25 between the incline and

Two packages are placed on an incline as shown. The coefficients of friction are μs = 0.30 and μk = 0.25 between the incline and package A, and μs = 0.20 and μk = 0.15 between the incline and package B. Knowing that the packages are in contact when released, determine

(a) The velocity of each package after 3 s,

(b) The force exerted by package A on package B.

6 kg A 9 kg 20

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