Why do you say that the friction force must be at its maximum value in part (b)? When ##f_s## is at its maximum value, the object is on the verge of slipping. But there is nothing in the statement of problem that says the object is on the verge of slipping in part (b).Kloud said:
No, I thought u were talking about frictional force in part c. For part b frictional force would be Us * N. And since the book is not moving horizontally, it means the horizontal forces are balanced. So N equals P.Kloud said:
The minimum horizontal force needed to prevent a book from falling depends on the weight and size of the book, as well as the coefficient of friction between the book and the surface it is resting on. This can be calculated using the equation F = μN, where F is the minimum force, μ is the coefficient of friction, and N is the normal force.
The weight of the book directly affects the minimum horizontal force needed to prevent it from falling. The heavier the book, the greater the minimum force required to counteract its weight and maintain its position on a surface.
No, the coefficient of friction varies for different surfaces. It depends on the materials and textures of the surfaces in contact. For example, the coefficient of friction between a book and a wooden table may be different than the coefficient of friction between the same book and a glass table.
Yes, the minimum horizontal force needed to prevent a book from falling can change over time due to factors such as wear and tear of the book or changes in the surface it is resting on. It is important to regularly check and adjust the force as needed to ensure the book remains stable.
Yes, depending on the positioning of the book and the surface it is resting on, it is possible for a book to require multiple minimum horizontal forces to keep it from falling. For example, a book placed on an inclined surface may require a force to prevent it from sliding down the incline and a separate force to prevent it from tipping over.
