A coffee cup on the dashboard of a car slides forward on the dash when the drive

Question

A coffee cup on the dashboard of a car slides forward on the dash when the driver decelerates from 40.4 km/hr to rest in 3 81 s or less, but not if he decelerates in a longer time. What is coefficient of static friction between the cup and the dash? Correct, computer gets: 0.301 If a bicyclist of mass 63.0 kg (including the bicycle) can coast down a 5.40 degree hill at a speed of 6.00 km/hr became of air resistance, how much force must be applied to climb the hill same speed (and the some air resistance)? Correct, computer gets: 116 N A train travelling at a constant speed rounds a curve of radius 272 m. A chandelier suspended from the ceiling swings out to an angle of 16.9 degree throughout the turn. What is the speed of the

Explanation / Answer

(centrifugal force) / (gravitational force) = Tan(16.9)

(mv

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