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January 30, 2015

January 30, 2015

Posted by **A roller-coaster car** on Monday, January 21, 2013 at 11:16pm.

(a) The car has a speed of 18.4 m/s at point A. if the track exerts a normal force on the car of 2.21 104 N at this point, what is the mass of the car?

(b) What is the maximum speed the car can have at point B for the gravitational force to hold it on the track?

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