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Transcript

Preflights
Consider the following situation: You are driving a car with
constant speed around a horizontal circular track. On a
piece of paper, draw a Free Body Diagram (FBD) for the
car. The net force on the car is FN
f
22% A. Zero
67% B. Pointing
11% C. Pointing
radially inward
radially outward
R
W
correct
SF = ma = mv2/R
âThis is why many racetracks
have banked roadwaysâ
âCentripetal force is always pointing inward"
âEver spin stuff in a bowl? It gravitates outward.â
16

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