A rider moves at constant height in a horizontal circle inside a cylindrical Well of Death. Which statements are correct?
Select all that apply

Question

A rider moves at constant height in a horizontal circle inside a cylindrical Well of Death. Which statements are correct?

G1 Physics · Accepted Answer

The normal reaction provides centripetal force, so N_R = mv²/r. To remain at constant height, upward friction balances weight: f = mg. At the minimum speed, friction is limiting, so mg = μN_R = μmv_min²/r. Therefore v_min = √(rg/μ). Hence all statements are correct.