Question

Q3) Blocks with masses of 1 kg 2 kg , and 3 kg are lined up in a row on a frictionless table. All three are pushed forward by a 12 N force applied to the 1 kg block. (a) Draw FBD indicating all the forces acting on blocks a) How much force does the 2 kg block exert on the 3 kg block b) How much force does the 2 kg block exert on the 1 kg block

Answer 1

given 2 - 2K surou aanotón DM33kg FBD is Drawn individually for each block. 4. Faq Naamig to where F21 is force exerted by block 2 kg on 1 kg block. Ingasd is force F12 a Fax . N2=Mzgo - uchere. Pro Fiz is fordelererted on block 2kg due to block 1 kg to F31 is force exerted due to block 3kg on block kg- 7 where o posted on Fogol is force enested on 3 kg ... block are to block o mga

b) Frode first we need to find Net acceleration by which all neo blocks will more D CAD together with - F=12 N m= 1+2 +3 = .6 kg hence = Fama ās E = word 125 qmis? all block will move with 2 m/s2. now: 3 kq accelerato lock is moving with hence', 2 m/s2 mass = 3 kg i a=2misz so Fuera ma = (3) (2) = 60 renforo so total GN Force is enelled on 3 kg by 2kg block. F21 so F12 is cause to move block o 2kg and 3kg at acceleration 92m15² together so F12= (M2+W3) a . F12 = 5x2 = ION using Newton's grad i overtog 1 F22] = l F22] =10N in
*Newton's Third Law says that every force have an equal and opposite reaction.

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