A 925 kg car rounds an unbanked curve at a speed of 25 m/s. If the radius of the curve is 72, what is the minimum coefficient of friction between the car and the road required so that the car does not skid?

Explanation:

The centripetal force is provided by the static friction between the car and the road, and always have to comply with , so we have:

Which means:

So we have:

Which means that is the minimum value the coefficient of static friction can have, which for our values is:

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explanation:

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jupiter is the largest planet in our solar system, having a mass and radius that are respectively, 318 and 11.2 times that of earth. suppose that an object falls from rest near the surface of each planet and that the acceleration due to gravity remains constant during the fall. each object falls the same distance before striking the ground. determine the ratio of the time of fall on jupiter to that on earth.