A body is moving along a rough horizontal surface with an initial velocity $6\,\,m/s.$ If the body comes to rest after travelling $9\, m$, then the coefficient of sliding friction will be
A body is moving along a rough horizontal surface with an initial velocity $6\,\,m/s.$ If the body comes to rest after travelling $9\, m$, then the coefficient of sliding friction will be
$0.4$
$0.2$
$0.6$
$0.8$
A body is moving along a rough horizontal surface with an initial velocity $6\,\,m/s.$ If the body comes to rest after travelling $9\, m$, then the coefficient of sliding friction will be
We know $s = \frac{{{u^2}}}{{2\mu \;g}}$
$\therefore \mu = \frac{{{u^2}}}{{2gs}} = \frac{{{{(6)}^2}}}{{2 \times 10 \times 9}} = 0.2$
Other Language