Okay I better get a good answer for this guy I'm puttin' all my money on it.
2 answers:
Answer: Explanation:
Newton's third law of motion is simply whenever two objects interact,
they exert equal and opposite forces on each other.
This is often worded as 'every action has an equal and opposite reaction'. you have to remember two forces: 1 is act on two different objects , 2 are of the same type (i.e. both contact forces)
The statement simply means that in every interaction, there is a pair of forces acting on the two interacting objects. The size of the forces on the first object equals the size of the force on the second object. The direction of the force on the first object is opposite to the direction of the force on the second object. Forces always come in pairs - equal and opposite action-reaction force pairs.
the attached is an example of "in every action, there is an equal and opposite and reaction.
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F = normal force by each board on each side
W = weight of the board in between acting in down direction = 95.5 N
f = frictional force in upward direction by each board
= coefficient of friction = 0.663
Using equilibrium of force in Upward direction
f + f = W
f = W/2
f = 95.5/2 = 47.75 N
frictional force is given as
f = F
47.75 = (0.663) F
F = 72.02 N
