Question: A section of track for a roller coaster consists of two circular arcs AB and CD joined by a straight portion BC. The radius of

A section of track for a roller coaster consists of two circular arcs AB and CD joined by a straight portion BC. The radius of AB is 27 m and the radius of CD is 72 m. The car and its occupants, of total mass 250 kg, reach point A with practically no velocity and then drop freely along the track. Determine the normal force exerted by the track on the car as the car reaches point B. Ignore air resistance and rolling resistance.

27 m 18 m 40 - 72 m D

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VA 0 T 0 A 27m W 1250 kg x 981 ms 40 T3 mv 250 kgv 125v B UAB W27 1 co... View full answer

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