For this problem consider a yo-yo like the one indicated in the figure, where we are showing a cross sec- tion to illustrate the interior of the yo-yo. For all parts of this activity assume that air resistance is negligible. (a) Consider the yo-yo in free-fall, with the string not attached to any- thing and completely wrapped around. Draw a free body diagram of the forces acting on the yo-yo. (b) The yo-yo now falls with the string attached to a fixed support. Draw an complete free body diagram where the object treated as an extended object, indicating the place where forces are exerted. (c) If both yo-yos are released at the same time from the same height do they fall at the same rate? Which moves fastest?

For this problem consider a yo-yo like the one indicated in the figure, where we are showing a cross sec- tion to illustrate the interior of the yo-yo. For all parts of this activity assume that air resistance is negligible. (a) Consider the yo-yo in free-fall, with the string not attached to any- thing and completely wrapped around. Draw a free body diagram of the forces acting on the yo-yo. (b) The yo-yo now falls with the string attached to a fixed support. Draw an complete free body diagram where the object treated as an extended object, indicating the place where forces are exerted. (c) If both yo-yos are released at the same time from the same height do they fall at the same rate? Which moves fastest?

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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Concept explainers

Buckling of columns

The column is described as a vertical member of the structure that carries an axial compressive load, and buckling is a lateral deformation of the column under the application of load.

Question

For this problem consider a yo-yo like the one indicated in the figure, where we are showing a cross sec-
tion to illustrate the interior of the yo-yo. For all parts of this activity assume that air resistance is negligible.
(a) Consider the yo-yo in free-fall, with the string not attached to any-
thing and completely wrapped around. Draw a free body diagram
of the forces acting on the yo-yo.
(b) The yo-yo now falls with the string attached to a fixed support.
Draw an complete free body diagram where the object treated as
an extended object, indicating the place where forces are exerted.
(c) If both yo-yos are released at the same time from the same height
do they fall at the same rate? Which moves fastest?
(d) Explain your results from Part (c) qualitatively using Newton's
Laws. Indicating the existence of a tension force is not sufficient,
you must prove that this tension is not zero.
(e) For the yo-yo of Part (b), can the force exerted by the string ever
do work on it? Explain the result of Part (c) qualitatively using
conservation of energy.
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