Physics · 2015
NEET 2015 · 25 July · Code C · Q14
An automobile moves on a road with a speed of 54 km h^-1. The radius of its wheels is 0.45 m and the moment of inertia of the wheel about its axis of…
An automobile moves on a road with a speed of $\displaystyle 54 \mathrm{~km} \mathrm{~h}^{-1}$. The radius of its wheels is $\displaystyle 0.45$ m and the moment of inertia of the wheel about its axis of rotation is $\displaystyle 3 \mathrm{~kg} \mathrm{~m}^2$. If the vehicle is brought to rest in $\displaystyle 15$ s, the magnitude of average torque transmitted by its brakes to the wheel is :
Official answer
From NTA’s final answer key for this paper.
(3)
$\displaystyle 6.66 \mathrm{~kg} \mathrm{~m}^2 \mathrm{~s}^{-2}$
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