he bar clamp is being used to clamp two boards together while the glue between them cures. What torque M must be applied to the andle of the screw in order to produce a 68-lb compression between the boards? The 0.375-in.-diameter single-thread screw as 18 square threads per inch, and the effective coefficient of friction is 0.27. Neglect any friction in the pivot contact at C. What orque M' is required to loosen the clamp? M

he bar clamp is being used to clamp two boards together while the glue between them cures. What torque M must be applied to the andle of the screw in order to produce a 68-lb compression between the boards? The 0.375-in.-diameter single-thread screw as 18 square threads per inch, and the effective coefficient of friction is 0.27. Neglect any friction in the pivot contact at C. What orque M' is required to loosen the clamp? M

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Concept explainers

Laws of Equilibrium

A body is said to be in equilibrium if the system of forces acting on the body tends to keep the body at rest, in other words, there is no translation motion or net torque on the body. Under such conditions, the equilibrium conditions are to be applied to analyze the condition. The branch of mechanics that deals with this condition is known as 'statics'. Under equilibrium, there are no net forces on the body.

Question

The bar clamp is being used to clamp two boards together while the glue between them cures. What torque M must be applied to the
handle of the screw in order to produce a 68-lb compression between the boards? The 0.375-in.-diameter single-thread screw
has 18 square threads per inch, and the effective coefficient of friction is 0.27. Neglect any friction in the pivot contact at C. What
torque M' is required to loosen the clamp?
Answers:
M =
M' =
i
i
C
lb-in.
lb-in.
M

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