A block is at rest on a level table. A second block of greater mass is placed on

Question

A block is at rest on a level table. A second block of greater mass is placed on top of the first. Name ALL the forces for each block. Are there any forces acting on the upper block that have the same magnitude as a force acting on the lower block?

Newton's Third Law says that when one object exerts a force on another, the force exerted by the second object is equal in magnitude and opposite to the force exerted by the first object. The two forces together form an action-reaction or a Newton's Third Law pair. Which, if any, action-reaction pairs are present in this scenario?

Explanation / Answer

lower block :

garvity force = mg downwards

normal force N1 upwards due to table

norml force N2 downwrads due to second block (upper block )

upper block:

garvity force = Mg downwards

normal force N2 upwards due to first (l;ower) block

yes this normal force N2 .

same magnitude opposite directions

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