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The radius of a friction circle for a shaft rotating inside a bearing is (where r = Radius of shaft and $$\tan \varphi $$  = Coefficient of friction between the shaft and bearing)?

LohaHridoy
  1. $${\text{r}}\sin \varphi $$
  2. $${\text{r}}\cos \varphi $$
  3. $${\text{r}}\tan \varphi $$
  4. $$\frac{{\text{r}}}{2}\cos \varphi $$

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Answer: Option 1

Let'

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