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determine the required height h of the roller coaster so that when it is essentially at rest at the crest of the hill it will reach a speed v=...

determine the required height h of the roller coaster so that when it is essentially at rest at the crest of the hill it will reach a speed v= 100km/hr when it comes to the bottom.Also,what should be the minimum radius of curvature p for the track at B so that the passengers do not experience a normal force greater than kmg?neglect the size of the car and passengers.Take k=4

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