The 50-kg block rests on the horizontal surface, and a force P = 200 N, whose direction can be varied, is applied to the block. If the block begins to slip when e is reduced to 30°, calculate the coefficient of static friction μs between the block and the surface. P Ө 50 kg Hs

The 50-kg block rests on the horizontal surface, and a force P = 200 N, whose direction can be varied, is applied to the block. If the block begins to slip when e is reduced to 30°, calculate the coefficient of static friction μs between the block and the surface. P Ө 50 kg Hs

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

Basic Terminology in Mechanics

The area of science and mathematics concerned the motion of the objects, the relation between the force matter, and motion if specified. Forces exerted over the objects result in displacements or changes in the position of an object concerning its environment. This branch of physics keeps its roots in Ancient Greece in the form of the scripts of Aristotle and Archimedes.

Question

Also solve if P is applied with θ = 45°, calculate the magnitude of the friction force. Express your answer in units of N.

The 50-kg block rests on the horizontal surface, and a force P = 200 N, whose direction can be varied, is applied to the block. If the block begins to
slip when 0 is reduced to 30°, calculate the coefficient of static friction µs between the block and the surface.
P-
Ꮎ
50 kg
Hg

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Step 1: Determining the given data

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Step 2: Drawing FBD of the block

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Step 3: Finding the value of normal force

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Step 4: Finding the value of coefficient of static friction

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Step 5: Finding normal foce on the block when angle is 45 degree

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Step 6: Finding friction force on the block

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