Physics · 2015
NEET 2015 · 25 July · Code C · Q43
A plank with a box on it at one end is gradually raised about the other end. As the angle of inclination with the horizontal reaches 30°, the box…
A plank with a box on it at one end is gradually raised about the other end. As the angle of inclination with the horizontal reaches $\displaystyle 30$°, the box starts to slip and slides $\displaystyle 4.0$ m down the plank in $\displaystyle 4.0$ s. The coefficients of static and kinetic friction between the box and the plank will be, respectively :
Official answer
From NTA’s final answer key for this paper.
(4)
0.$\displaystyle 6$ and $\displaystyle 0.5$
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