Question

A body is gently on a conveyor belt moving 3 m/s. If $\mu$ = 0.5 how far will the body move relative to the belt befour coming to rest ? (g = 10 m/$s^2$)

• A. 0.3 m
• B. 0.6 m
• C. 0.9 m
• D. 0.8 m

Answer 1

The correct option is C 0.9 m

$4=3m/s$

$v=0$ (rest)

$r=?$

$a=\mu g=0.5\times 10=5m/s^2$

Using $v^2=u^2-2as$

We get $s=\frac{u^2-v^2}{2a}=\frac{9-0}{2\times 5}$

$s=0.9$m.