3. A child stands near the edge of a playground merry-go-round, 2 meters from the center. She holds onto nothing, but her shoes have a static coefficient of friction of 0.3 with the merry-go-round. If the merry-go-round starts accelerating from rest at t=0 with an angular acceleration of 0.1 radians/s², at what time is she thrown off of the merry-go-round?
3. A child stands near the edge of a playground merry-go-round, 2 meters from the center. She holds onto nothing, but her shoes have a static coefficient of friction of 0.3 with the merry-go-round. If the merry-go-round starts accelerating from rest at t=0 with an angular acceleration of 0.1 radians/s², at what time is she thrown off of the merry-go-round?
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
Related questions
Question
#3
Transcribed Image Text:with an initial kinetic energy of
Joules. He then makes his rotational
inertia 3 times smaller by pulling his arms
and legs closer to his center of mass.
X
A) In Joules, how much work does it take to change his rotational inertia?
B)
From the picture and coordinate system shown, what direction is his
angular velocity?
3.
A child stands near the edge of a playground merry-go-round, 2 meters
from the center. She holds onto nothing, but her shoes have a static coefficient
of friction of 0.3 with the merry-go-round. If the merry-go-round starts
accelerating from rest at t=0 with an angular acceleration of 0.1 radians/s², at
what time is she thrown off of the merry-go-round?
1.
A 60 kg Olympic diver stands at rest at one end of a motionless d
board of mass 20 kg. The center of mass of the 2 m board is at its midpoin
The board is held in place by two bolts, one at the end of the board opposi
diver and the other 0.2 m from the first. If the forces of these two bolts on
board are each either up or down, what is the magnitude and direction of e
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