Example 1: A 200 Ib block is at rest on a 30° incline. The coefficient of friction between the block and the incline is 0.20. Compute the value of a horizontal force P that will cause motion to impend up the plane. Given: e = 30° W = 200 pounds (motion) 200# Unknowns: N, P, F P 300 F 30 N

Example 1: A 200 Ib block is at rest on a 30° incline. The coefficient of friction between the block and the incline is 0.20. Compute the value of a horizontal force P that will cause motion to impend up the plane. Given: e = 30° W = 200 pounds (motion) 200# Unknowns: N, P, F P 300 F 30 N

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 7.50P: The block of weight W is pulled by the force P inclined at the angle to the horizontal. Find the...

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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

Example 1: A 200 Ib block is at rest on a 30° incline. The coefficient of friction between
the block and the incline is 0.20. Compute the value of a horizontal force P that will
cause motion to impend up the plane.
Given:
e = 30°
W = 200 pounds
(motion)
200#
Unknowns: N, P, F
300
30
N

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