Question 17 The 3-kg disk Dis attached to the end of a cord. The other end is attached to ball and socket joint located at the center of platform. If the platform is rotating rapidly, and the disk is placed on it and released from rest, determine the time it takes for the disk to reach a speed great enough to break the cord. The max tension the cord can sustain is 100 N, and the coefficient of kinetic friction between disk and platform is pk= 0.1 D Motion of platfom
Question 17 The 3-kg disk Dis attached to the end of a cord. The other end is attached to ball and socket joint located at the center of platform. If the platform is rotating rapidly, and the disk is placed on it and released from rest, determine the time it takes for the disk to reach a speed great enough to break the cord. The max tension the cord can sustain is 100 N, and the coefficient of kinetic friction between disk and platform is pk= 0.1 D Motion of platfom
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
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Question

Transcribed Image Text:Question 17
The 3-kg disk Dis attached to the end of a cord. The other end is attached to
ball and socket joint located at the center of platform. If the platform is
rotating rapidly, and the disk is placed on it and released from rest,
determine the time it takes for the disk to reach a speed great enough to
break the cord. The max tension the cord can sustain is 100 N, and the
coefficient of kinetic friction between disk and platform is Pk= 0.1
-- Motion of platfom
Question 18
Design of the ski requires knowing the type of forces that will be exerted on
the skier and his approximate trajectory. In the case as shown, determine
the normal force and acceleration on the 600-N skier the instant he arrives
at the end of jump, A, where his velocity is 9 m/s.
15 m
Question 19
Packages, each of mass 2-kg, are delivered from a conveyor to a smooth
circular ramp with a velocity of vo= 1 m/s. If the effective radius of the ramp
is 0.5 m, determine the angle 0= Omax at which each package begins to leave
the surface.
ds = 0.5 da
r-0.5 m
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