Q5 A pull of 20 N at 30° to the horizontal is necessary to move a block of wood on a horizontal table. If the coefficient of friction between the bodies in contact is 0.25, what is the weight of the block? P sin 30° 30° P cos30° W

Q5 A pull of 20 N at 30° to the horizontal is necessary to move a block of wood on a horizontal table. If the coefficient of friction between the bodies in contact is 0.25, what is the weight of the block? P sin 30° 30° P cos30° W

International Edition---engineering Mechanics: Statics, 4th Edition

4th Edition

ISBN:9781305501607

Author:Andrew Pytel And Jaan Kiusalaas

Publisher:Andrew Pytel And Jaan Kiusalaas

Chapter7: Dry Friction

Section: Chapter Questions

Problem 7.81P: Calculate the horizontal force P required to push the 85-lb lawn mower at constant speed. The center...

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Concept explainers

Axial Load

When a bar of the uniform cross-section is acted by a load, such that the load acts along the longitudinal axis of the bar, such kinds of loadings are known as axial loadings. In general terms, a load is an external force acting on a component. An axial load acts perpendicular to the geometric cross-section of the component. Based on the direction of the application of the load, an axial load can be tensile or compressive. The analysis of bodies under the action of axial loads is generally studied under the branch of mechanics, known as statics.

Question

Q5 A pull of 20N at 30° to the horizontal is necessary to move a block of wood on
a horizontal table. If the coefficient of friction between the bodies in contact is
0.25, what is the weight of the block?
P sin 30°
30°
P cos30°
W

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