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An automobile moves on a road with a spe...

An automobile moves on a road with a speed of `54 kmh^(-1)`. The radius of its wheels is `0.45 m` and the moment of inertia of the wheel about its axis of rotation is `3 kg m^(2)`. If the vehicle is brought to rest in `15 s`, the magnitude of average torque transmitted by its brakes to the wheel is

A

`2.86kg m^(2)s^(-2)`

B

`6.66 kg m^(2)s^(-2)`

C

`8.58kg m^(2)s^(-2)`

D

`10.86 kg m^(2)s^(-2)`

Text Solution

Verified by Experts

The correct Answer is:
B
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