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A giant wheel, having a diameter of 40 m, is fitted with a cage and platform on which a man of mass m stands. The wheel is rotated in a vertical plane at such a speed that the force exerted by the
man on the platform is equal to his weight when the cage is at X, as shown. The net force on the man at point X is:
man in
cage
wheel
Select one:
О а. тg, down
O b. mg, up
Ос. 2тg, up
O d. 2mg, down
Oe.

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