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A person ofmass 75 kg stands at the center of a rotating merry-go-roundplatform of radius 2.8 m and moment of inertia 1300 kgm2. Theplatform rotates without friction with angular velocity 3.0 rad/s.The person walks radially to the edge of the platform.
(a) Calculate the angularvelocity when the person reaches the edge.
rad/s
(b) Calculate the rotational kinetic energy of the system ofplatform plus person before and after the person'swalk.
J(before)
J(after)
A disabled tanker leaks kerosene (n = 1.20) into thePersian Gulf, creating a large slick on top of the water(n = 1.30). (a) If you are looking straight down from an airplane, while the Sun is overhead, what is the thickness at a region of the slic..
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