A roller-coaster car speeds down a hill past point A where R1 = 8.2 m and then rolls up a hill past point B where R2 = 15.4 m, as shown below.
(a) The car has a speed of 21.0 m/s at point A. if the track exerts a normal force on the car of 2.30 ✕ 104 N at this point, what is the mass of the car?
kg
(b) What is the maximum speed the car can have at point B for the gravitational force to hold it on the track?
0 answers