1. The problem statement, all variables and given/known data A giant wheel, 40m in diameter, is fitted with a cage and platform on which a man can stand. The wheel rotates at such a speed that when the cage is at X (as shown) the force exerted by the man on the platform is equal to his weight. The speed of the man is: X is located at the top of the vertical wheel. A. 14m/s B. 20m/s C. 28m/s D. 80m/s E. 120m/s 2. Relevant equations Fn + Fg = ma 3. The attempt at a solution Well it states the normal force is mg. So I got 2mg = m(v^2/r) which I got that v = 28 m/s. But the answer key says it's b.