An automobile moves on a road with a speed of 54 km/h. The radius of its wheels is 0.45 m…
Physics · JEE Main · NTA Exams — Rotational Motion
An automobile moves on a road with a speed of 54 km/h. 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 m2. If the vehicle is brought to rest in 15 s, the magnitude of average torque transmitted by its brakes to wheel is:
- 2.86 kg m2s-2
- 6.66 kg m2s-2
- 8.58 kg m2s-2
- 10.86 kg m2s-2
Answer
(B) 6.66 kg m 2 s -2
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