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aerf
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A discussion my maths teacher brought up today arguing that the Newton's Third Law pair of pushing on the table and the table pushing against the person should cancel each other out.
So there should be no resultant force and it should not move. I argued it was to do with F=ma so if the object weighs less there will be greater movement as opposed to the greater mass of a person pushing on it. He argued that the forces would still cancel and would still not move as Newton's First Law says that unless unbalanced force is acting it will stay at rest.
I also thought that as the weight of the table and the pushing force are perpendicular, they are independent. So you are only doing work against the friction. But does this change anything?
Confusing...
So there should be no resultant force and it should not move. I argued it was to do with F=ma so if the object weighs less there will be greater movement as opposed to the greater mass of a person pushing on it. He argued that the forces would still cancel and would still not move as Newton's First Law says that unless unbalanced force is acting it will stay at rest.
I also thought that as the weight of the table and the pushing force are perpendicular, they are independent. So you are only doing work against the friction. But does this change anything?
Confusing...