Question 5 of 6A 4.870 kg block of wood rests on a steel desk. The coefficient of staticfriction between the block and the desk is H.= 0.605 and the coefficientFof kinetic friction is0.355. At time t = 0, a force F = 17.8 N isUs.kapplied horizontally to the block. State the force of friction applied to theblock by the table at timest = 0 and t > 0.t = 0t > 0Consider the same situation, but this time the external force F is 35.8 N. Again, state the force of friction acting on theblock at times t = 0 and r> 0.t = 0t > 0 A 1.83 kg book is placed on a flat desk. Suppose the coefficient of static friction between the book and the desk is 0.522and the coefficient of kinetic friction is 0.283.How much force is needed to begin moving the book?How much force is needed to keep the book moving at constant speed once it begins moving?

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A 4.870 kg block of wood rests on a steel desk. The coefficient of static friction between the block and the desk is u, = 0.605 and the coefficient of kinetic friction is 4 = 0.355. At timet = 0, a force F: 17.8 N is %3D applied horizontally to the block. State the force of friction applied to the block by the table at times t = 0 and t > 0.

A 4.870 kg block of wood rests on a steel desk. The coefficient of static friction between the block and the desk is u, = 0.605 and the coefficient of kinetic friction is 4 = 0.355. At timet = 0, a force F: 17.8 N is %3D applied horizontally to the block. State the force of friction applied to the block by the table at times t = 0 and t > 0.

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ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Mechanical Properties of Solids

There are three types of matter- solid, liquid and gas. Out of them, solids have a rigid shaped and size. The intermolecular forces of attractions in solids are greatest. Mechanical properties are the physical properties of a material which it shows, when it is provided with certain amount of force or load. These properties are to be kept in mind for various purposes. When a force is applied to an object, the object may or may not get deformed depending upon its elastic property. But every time the object develops a restoring force against the force applied. This is commonly known as stress. If the object changes its dimensions due to the force applied it develops strain ( which is the ratio of change in dimension to the original dimension).

Question

A 1.83 kg book is placed on a flat desk. Suppose the coefficient of static friction between the book and the desk is 0.522
and the coefficient of kinetic friction is 0.283.
How much force is needed to begin moving the book?
How much force is needed to keep the book moving at constant speed once it begins moving?

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