Question

For a 20degree jaw opening of the tongs for gripping a tube as

shown, determine the minimum required coefficient of

static friction at the contacting surfaces for static stability.

Answer 1

From the given question,

We can designed the given diagram,

We know that, $\mu = \tan(\phi)$

Here, from the geometry, we can calculate that, $\phi= 20/2 = 10^\circ$

$\Rightarrow \mu = \tan(10)$

$\Rightarrow \mu = 0.176$

$\Rightarrow \mu = 0.18$