T4.00 m В 25.0 m 12.0 m 3.00 m
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Question
A 350 kg roller coaster car starts from rest at point A and slides
down a frictionless loop-the-loop (Fig. ). The car’s wheels are designed
to stay on the track. (a) How fast is this roller coaster car moving
at point B? (b) How hard does it press against the track at point B?
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