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A person of mass 73kg stands at the center of a rotating merry-go-round platform of radius 3.5m and moment of inertia 950kg kg m^2 . The platform rotates without friction with angular velocity 0.90rad/s . The person walks radially to the edge of the platform.
A) Calculate the angular velocity when the person reaches the edge.
B) Calculate the rotational kinetic energy of the system of platform plus person before the person's walk.
C) Calculate the rotational kinetic energy of the system of platform plus person after the person's walk.
ccccthe Zambesi river in Africa rushes over Victoria Falls at a rate of 25 x 10^6 gallons per minute. The falls are 108 m high, 1 gallon equals 3.785 x 10^-3 m^3 (or 0.1337 cubic foot), and the water has a density of 1.00 x 10^3 kg/m3 (each cubic foo..
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