What is the Law of Balanced Forces?

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The Law of Balanced Forces states that no object can accelerate because the forces acting on it are balanced by corresponding reaction forces. However, action and reaction forces act on different bodies, which can lead to movement. An example provided illustrates this: when a person on ice skates throws a ball, the ball moves forward due to the force applied, while the reaction force causes the person to slide backward. This distinction clarifies that balanced forces do not prevent movement in different objects. Understanding this concept is crucial for grasping the dynamics of motion.
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No object can ever accelerate, for each of the forces acting on it is balanced by the corresponding reaction force.
 
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wikidrox said:
No object can ever accelerate, for each of the forces acting on it is balanced by the corresponding reaction force.
No. Action/reaction forces act on different bodies.
 
I don't understand what you mean. Could you give me an example.
 
If a person standing on iceskates on slick ice throws a ball, the force is on the ball (which goes forward) while the reaction force is on the person (who slides backwards).
 

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Kindly see the attached pdf. My attempt to solve it, is in it. I'm wondering if my solution is right. My idea is this: At any point of time, the ball may be assumed to be at an incline which is at an angle of θ(kindly see both the pics in the pdf file). The value of θ will continuously change and so will the value of friction. I'm not able to figure out, why my solution is wrong, if it is wrong .
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TL;DR Summary: I came across this question from a Sri Lankan A-level textbook. Question - An ice cube with a length of 10 cm is immersed in water at 0 °C. An observer observes the ice cube from the water, and it seems to be 7.75 cm long. If the refractive index of water is 4/3, find the height of the ice cube immersed in the water. I could not understand how the apparent height of the ice cube in the water depends on the height of the ice cube immersed in the water. Does anyone have an...
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