Question

Question No. 7
Two identical smooth surfaced solid cylinders of radius r are placed touching along their lengths on a
horizontal surface. A third cylinder of same material but twice the radius of that of the cylinders is placed
lengthwise on them so that the system remains at rest. If all three cylinders have the same length, then
minimum value of the coefficient of friction between smaller cylinders and the surface is:
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Answer 1

Answer:

In this method of integration by substitution, any given integral is transformed into a simple form of integral by substituting the independent variable by others. Take for example an equation having an independent variable in x, i.e. ∫sin (x3).