Calculating friction in Parallel?

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To calculate the total frictional force of four objects experiencing equal friction, simply add the individual frictional forces together if they act in the same direction. Each object generates approximately 3N of friction, leading to a total of 12N when combined. If the forces act in different directions or angles, vector addition is necessary to determine the resultant force. The discussion clarifies that the method of calculation depends on the directionality of the forces involved. Understanding these principles is crucial for accurately assessing the system's overall frictional force.
davidc95
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Hi,

For a school project I have created a system which applies an equal force to 4 objects of measurable friction. Each yields a frictional force of approx. 3N (calculated from F = μFNormal) when in motion - but I am not quite sure as to calculating the total frictional force the combined set of 4 generates 'together' against the system supplying the same applied force across all of them.
Is it as simple as adding the 4 frictional forces together? Or perhaps more complex, through employing the parallel equation of (1/FTotal) = (1/F) + (1/F) + (1/F) + (1/F), for example? Or maybe its something different?

Thanks in advance for any help. :smile:
 
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If they are all acting in the same direction just add them together. If they act in different directions or at different angles you need use vector addition.
 

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