What can you say about the value of the static friction force between two surfaces if the contact area is changed?
What can you say about the value of the static friction force between two surfaces if...
The coefficient of kinetic friction between two materials depends on Select one: a. the normal force b. the surface area in contact c. the relative speed of the surfaces d. the type of surfaces
explain how you would find the coefficient of static friction and coefficient of kinetic friction between two surfaces. clearly describe what needs to be done and used.
Review The wedge is used to level the member. The coefficient of static friction between the wedge and the two surfaces of contact is p, = 0.15. Suppose that w = 400 N/m and a =5°(Figure 1) Part A Figure Determine the horizontal force P that must be applied to begin to push the wedge forward. Neglect the weight of the wedge. Express your answer to three significant figures and include the appropriate units. 1 of 1 Ps Value Units...
What does friction not depend upon? the type of surfaces in contact the area of contact the force with which an object is pressing against a surface whether the contact surface is wet or dry
What is the difference between static and kinetic friction. Define both, write their SI unit and dimension. Write down the mathematical statement (formula) that allows us to calculate the force of friction. Explain each term with its unit. Let’s say you’re dragging a 50 kg rubber box on wet concrete. How do you calculate the force of friction on this box?
1. Describe the difference between static friction and kinetic friction. 2. You have a 1.20 kg cart resting on various surfaces. For each of the following scenarios, find the normal force acting on the cart (in standard units): a. The cart on a horizontal floor b. The cart carrying a load of 750 g on a horizontal floor c. The cart on an incline raised 15° above the horizontal d. The cart on a horizontal floor with a string attached...
Review The wedge is used to level the member. The coefficient of static friction between the wedge and the two surfaces of contact is Hs = 0.18. Suppose that w = 700 N/m and a = 7º(Figure 1) Part A Determine the horizontal force P that must be applied to begin to push the wedge forward. Neglect the weight of the wedge. Express your answer to three significant figures and include the appropriate units. MA Figure 1 of 1 P=...
The coefficients of friction are ?? = 0.4 between all surfaces of contact. Assuming the pulley is frictionless, a. Determine the smallest force P required to start the 45-kg block moving if the cable is attached as shown. b. Determine the smallest force P required to start the 45-kg block moving if the cable is removed from the blocks. Will block A slip with respect to block B or will it move with block B? The coefficients of friction are...
A horizontal force of 930 N is needed to overcome the force of static friction between a level floor and a 150 kg crate. If g = 9.8 m/s^2, what is the co-efficient of static friction? sigma F_x = max = F - F_s sigma Fy = may = n - mg
The amount of friction depends on the ____ ____ and the force pressing two surfaces together (2 words).