A rider is moving safely at constant height in a Well of Death. If the speed is increased while the radius remains unchanged, which statement is correct?
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A rider is moving safely at constant height in a Well of Death. If the speed is increased while the radius remains unchanged, which statement is correct?

G1 Physics · Accepted Answer

The normal reaction supplies centripetal force, so N_R = mv²/r. Increasing v increases N_R. For constant height, the friction actually required to balance weight remains f = mg, while the maximum available static friction μN_R increases.