Homework Help: physics

Posted by Emily on Thursday, October 4, 2012 at 9:07pm.

A roller-coaster vehicle has a mass of 400 kg when fully loaded with passengers. r1 = 11 m and r2 = 17 m. If the vehicle has a speed of 17 m/s at A, what is the magnitude of the force that the track exerts on the vehicle at this point?

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