Calculating Coefficient of Friction: Newton's 3rd Law Examples

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The discussion focuses on calculating the coefficient of friction using Newton's 3rd Law through three specific examples. In the first scenario, a 50kg block is pulled with a force of 120N, leading to a coefficient of kinetic friction of 0.24. The second example involves a 100kg wooden crate pushed with a force of 350N, resulting in a net force of 50N. Lastly, a cabinet weighing 400N is pulled with a force of 220N at a 30-degree angle, yielding a coefficient of sliding friction of 0.5. These calculations demonstrate the application of Newton's laws in real-world scenarios.

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1.) a 50kg block is being pulled at a constant speed along a horizontal surface by a horizontal force of 120N.

Q: what is the coefficient of kenetic friction?

2.) a 100kg wooden crate is being pushed across a wooden floor with a horizontal force of 350N.
Q: What is the net force acting on a crate?

3.) A cabinet weighing 400N is pulled along a horizontal floor at constant speed by a rope which makes an angle of 30 degrees with the floor.

Q: what is the coefficient of sliding friction if the force on the rope is 220N?



Thanks in advance...
 
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Could you show what solving strategy you have applied here?
 

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