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A person of mass 75kg stands at the center of a rotating merry-go-round platform of radius 3.5mand moment of inertia 920kg?m2. The platform rotates without friction with angular velocity 2.1rad/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 and after the person's walk.
A diving board oscillates with simple harmonic motion of frequency 3.23 cycles per second. What is the maximum amplitude with which the end of the board could vibrate in order that a pebble placed there not lose contact with the board during the o..
When we look at a particular star, we are seeing it as it was 103 years ago. How far away from us (in meters) is the star
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