An automobile of mass 1200 kg rounds a curve at a speed of 25m/s. The radius of

Question

An automobile of mass 1200 kg rounds a curve at a speed of 25m/s. The radius of the curve is 400 m and its banking angleis 6 degrees. What would the friction force be if the road was flat? I don't know how to do this without a coefficient offriction. Could someone please help. An automobile of mass 1200 kg rounds a curve at a speed of 25m/s. The radius of the curve is 400 m and its banking angleis 6 degrees. What would the friction force be if the road was flat? I don't know how to do this without a coefficient offriction. Could someone please help.

Explanation / Answer

The key here is to recognize that the friction force is actingas the centripetal force. Thus: Ff = m(v2/r) = (1200 kg) * [(25m/s)2 / (400 m)] = 1875 N

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