18. A child is standing on the edge of a merry-go- round that has the shape...
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18. A child is standing on the edge of a merry-go- round that has the shape of a disk as shown in the figure. The mass of the child is 40 kilograms. The merry-go-round has a mass of 200 kilograms and a radius of 2.5 meters, and it is rotating with an angular velocity of w = 2.0 radians per second. The child then walks slowly towards the center of the merry-go-round. When the child reaches the center, what is the angular velocity of the disc ? (The size of the child can be neglected) (1) 2.0 rad/s (2) 2.2 rad/s (3) 2.4 rad/s (4) 2.8 rad/s 18. A child is standing on the edge of a merry-go- round that has the shape of a disk as shown in the figure. The mass of the child is 40 kilograms. The merry-go-round has a mass of 200 kilograms and a radius of 2.5 meters, and it is rotating with an angular velocity of w = 2.0 radians per second. The child then walks slowly towards the center of the merry-go-round. When the child reaches the center, what is the angular velocity of the disc ? (The size of the child can be neglected) (1) 2.0 rad/s (2) 2.2 rad/s (3) 2.4 rad/s (4) 2.8 rad/s
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Fundamentals of Physics
ISBN: 978-0471758013
8th Extended edition
Authors: Jearl Walker, Halliday Resnick
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