The discussion revolves around determining the minimum horizontal force required to prevent a book from slipping, with specific values provided for normal force, static friction, and mass. The subject area includes concepts of static friction, forces, and Newton's laws of motion.
The discussion is active, with participants providing guidance and prompting each other to reconsider their assumptions and calculations. There is an exploration of how to relate the forces in different parts of the problem, and some participants express confusion about the application of formulas and the conditions under which they apply.
Participants note that the problem does not specify whether the static friction is at its maximum and discuss the implications of this uncertainty on their calculations. There is also mention of a free body diagram that may aid in understanding the forces involved.
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:
