A 1,262-kilogram roller coaster car starts at point A almost at rest. It runs downhill into a valley. At its bottom, the valey can be described by a circle with radius 12 m.
Find the height required at point A, such that the normal force acting on the car in point B is 337% of the weight.
Make sure to practise how to explain your work and also how to evaluate your result. Draw proper diagrams to support your work.