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A forces P is pushing again the block shown below so that theblock B 5kg does not slip off the front of the 20kg cart A?(coefficient of friction between the A and B is 0.25)
A Forces P Is Pushing Again The Block Shown Below So That The Block B 5kg Does Not Slip Off The Front Of The 20kg Cart A 1 (43.26 KiB) Viewed 36 times
P- A 3₂ B
2. a) Sketch Free body diagram b) As a whole system. Σ Fx = ma +→ P = ma P = (20+5)a= ? - (1) For the object A only, ΣF. = ma P-N = ma P-N = ? - (2) +→ For object B only, ↑ [F₂² +↑ F₁ = 0 Fr - W = 0 Fr W = 5(9.81) Nus = ? N = 49.05 = ? - (3) 0.25 Substitute (3) & (1) into (2) 196.2= 20a 25a a = ? c) Substitute into (1) P = 25a = 25 (39.24) = ?
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