12. Jo D. Kangaroo rides on the edge of a 3.0-m, 42-kg merry-go-round moving at 9.0 rad/s. Jo then walks to the merry-go-round's center. What is the rotational velocity in rad/s of the merry- go-round with Jo at its center if Jo has a mass of 75 kg? Treat Jo as a point-like object and the merry-go-round as a uniform disk.
12. Jo D. Kangaroo rides on the edge of a 3.0-m, 42-kg merry-go-round moving at 9.0 rad/s. Jo then walks to the merry-go-round's center. What is the rotational velocity in rad/s of the merry- go-round with Jo at its center if Jo has a mass of 75 kg? Treat Jo as a point-like object and the merry-go-round as a uniform disk.
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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12
Transcribed Image Text:psu.instructure.com/courses,
27539/tiles/
88070?module item id=34211200
he cosine function. Take the origin at the equilibrium point of the stone, with the positive y
direction downward.
11. How fast is the stone moving at 0.28 s after it is released?
12. Jo D. Kangaroo rides on the edge of a 3.0-m, 42-kg merry-go-round moving at 9.0 rad/s. Jo
then walks to the merry-go-round's center. What is the rotational velocity in rad/s of the merry-
go-round with Jo at its center if Jo has a mass of 75 kg? Treat Jo as a point-like object and the
merry-go-round as a uniform disk.
The following statement applies to questions 13 through 17.
A toy helicopter flies around in a circle of radius 0.97 m in 1.9
S.
13. What is the period of the helicopter’s motion?
14. What is the frequency of the helicopter's motion?
15. What is the angular speed of the helicopter?
16. What is the tangential speed of the helicopter?
17. What is the centripetal acceleration of the helicopter?
18. A 510-kilogram wrecking ball is free to swing from a 12 meter long wire. The ball has a
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