6. An astronaut, spaced out as usual, sits in her room at position "F" on the outer rim of a wheel-shaped station as shown. Gravitational forces are negligible. The station rotates about its axis 100 times each hour as shown. She weighed 900 N on earth. Her mass has not changed, but when she stands on a spring scale at "F" it correctly reads 1000 N. Calculate the radius of the station. Answers in meters.
(A) 400
(B) 360
(C) 330
(D) 280
(E) 260.
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統計: A(1), B(9), C(1), D(1), E(1) #3093847
統計: A(1), B(9), C(1), D(1), E(1) #3093847