D d No tension

Mechanics of Materials (MindTap Course List)
9th Edition
ISBN:9781337093347
Author:Barry J. Goodno, James M. Gere
Publisher:Barry J. Goodno, James M. Gere
Chapter3: Torsion
Section: Chapter Questions
Problem 3.4.8P: Two sections of steel drill pipe, joined by bolted flange plates at Ä are being tested to assess the...
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No
tension
Figure P-3-5,10
Transcribed Image Text:No tension Figure P-3-5,10
3-5.10. The differentiàl chain hoist in Fig. P-3-5.10 (p. 95) consists of
two concentric pulleys rigidly fastened together. The pulleys form two
sprockets for an endless chain looped over them in two loops. In one loop
is mounted a movable pulley supporting a load W. Neglecting friction,
determine the maximum load, W that can just be raised by a pull P applied
as shown. How is this result changed if P is not vertical?
2PD
W =
D d
Ans.
1.
Transcribed Image Text:3-5.10. The differentiàl chain hoist in Fig. P-3-5.10 (p. 95) consists of two concentric pulleys rigidly fastened together. The pulleys form two sprockets for an endless chain looped over them in two loops. In one loop is mounted a movable pulley supporting a load W. Neglecting friction, determine the maximum load, W that can just be raised by a pull P applied as shown. How is this result changed if P is not vertical? 2PD W = D d Ans. 1.
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