The horizontal surface onwhich the objects slide is frictionless.The acceleratio

Question

The horizontal surface onwhich the objects slide is frictionless.The acceleration of gravityis 9.8m/s2 .1 kg 7 kg 4 kg If Fl = 29 N andFr= 3 N, what is themagnitude of the force exerted on the blockwith mass 7 kg by the block with mass 4 kg? Answerin N The horizontal surface onwhich the objects slide is frictionless.The acceleration of gravityis 9.8m/s2 .1 kg 7 kg 4 kg If Fl = 29 N andFr= 3 N, what is themagnitude of the force exerted on the blockwith mass 7 kg by the block with mass 4 kg? Answerin N

Explanation / Answer

The force acted upon the 7kg block by the 4kg block will be thesame magnitude as Fr, or 3N according to your description. This is due to the fact that the 4kg object has the force Fr actingupon it in the left direction. Since the 7kg block only has two forces acting on it (the one fromleft which is the force from the 1kg object and the one from theright which is the force from the 4kg object), the left andright forces will be equal in magnitude to the forces drawnabove. Draw the free body diagrams of each block and see foryourself.

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