A force of 35.0 N is required to start a 6.0-kg box moving across a horizontal concrete
Question:
A force of 35.0 N is required to start a 6.0-kg box moving across a horizontal concrete floor.
(a) What is the coefficient of static friction between the box and the floor?
(b) If the 35.0-N force continues, the box accelerates at 0.60m/s2.
What is the coefficient of kinetic friction?
Step by Step Answer:
A freebody diagram for the box is shown Since the box does not accelerate vertically a To start ...View the full answer
Related Video
Static friction and kinetic friction are two types of friction that occur when two objects are in contact with each other. Static friction is the force that must be overcome to initiate motion between two surfaces that are in contact with each other but are not moving relative to each other. It is caused by the interlocking of rough surfaces at the microscopic level, and it increases as the force pushing the surfaces together increases. Once motion between the surfaces starts, the static friction is no longer present. Kinetic friction, also known as sliding friction, is the force that opposes the motion of two surfaces that are in contact with each other and are moving relative to each other. It is caused by the rubbing of the surfaces against each other and the resistance of the molecules in the surfaces to being moved. Kinetic friction is generally less than static friction, but it can still be a significant force, especially at high speeds. Both static and kinetic friction can be quantified using a coefficient of friction, which is a dimensionless number that represents the ratio of the frictional force between two surfaces to the normal force (the force perpendicular to the surfaces). The coefficient of static friction is typically greater than the coefficient of kinetic friction for a given pair of surfaces, because it takes more force to overcome the interlocking of the surfaces at rest than to maintain motion once it has started.
Students also viewed these Mechanics questions
-
A force of 48.0N is required to start a 50-kg box moving across a horizontal concrete floor. (a) What is the coefficient of static friction between the box and the floor? (b) If the 48.0-N force...
-
It is known that a vertical force of 800 N is required to remove the nail at C from the board. As the nail first starts moving, determine (a) The moment about B of the force exerted on the nail, (b)...
-
A horizontal force of P = 100 N is just sufficient to hold the crate from sliding down the plane, and a horizontal force of P = 350 N is required to just push the crate up the plane. Determine the...
-
A water sprinkler sprays water over a distance of 30 feet while rotating through an angle of 135. What area of lawn receives water? 135 30 ft
-
Suppose that the received signal is an FM system contains some residual amplitude modulation of positive amplitude a (t), as shown by s (t) = a (t) cos [2?? c t + ? (t)], where ?c is the carrier...
-
Why is a knowledge of accounting terms and concepts useful to persons other than professional accountants?
-
2-4. Cul es la diferencia entre el negocio de una organizacin y sus metas ? Seguimiento
-
You are in your third year as internal auditor with VXI International, manufacturer of parts and supplies for jet aircraft. VXI began a defined contribution pension plan three years ago. The plan is...
-
1. Identify the numbered components in the CVP graph. 2. State the effect of each of the following actions on line 3 , line 9 , and the break-even point. a. The unit selling price is increased from...
-
Knickknack, Inc. manufactures two products: odds and ends. The firm uses a single, plant wide overhead rate based on direct-labor hours. Production and product-costing data are as follows:...
-
If the coefficient of kinetic friction between a 22-kg crate and the floor is 0.30, what horizontal force is required to move the crate at a steady speed across the floor? What horizontal force is...
-
The coefficient of static friction between hard rubber and normal street pavement is about 0.90. On how steep a hill (maximum angle) can you leave a car parked?
-
Indicate whether each graph in Problem specifies a function. -10-5 10 -10 +5 +10 X
-
Why do you think diversity is important to organizations and what can a do to increase diversity in leadership? What is Servant Leadership? How can you apply this in your life? What is effective team...
-
How do you envision overcoming any potential resistance or skepticism from your colleagues in the vet tech field as you introduce these transformative strategies, and what steps do you think will be...
-
Managers encourage employees to do misleading activities such as speak falsehood and deceive customers which is clearly visible in the statement in the case " Sales are everything" wherein an...
-
Your Topic is "Why do you think there are so few people who succeed at both management and leadership? Is it reasonable to believe someone can be good at both?" Locate two to three articles about...
-
Explain the various benefits associated with professional networking. Also, expand on your answers how those would benefit you personally. PLEASE DO FAST AND CORRECT need correct answer
-
Ramon, a single taxpayer with no dependents, has adjusted gross income for 2016 of $98,000 and his itemized deductions total $19,000. What taxable income will Ramon show in 2016? a. $74,950 b....
-
What are the two methods used to translate financial statements and how does the functional currency play a role in determining which method is used?
-
The observed baseline vector components in meters between two control stations are (3814.244, 470.348, 1593.650). The geocentric coordinates of the control stations are (1,162,247.650, 4,655,656.054,...
-
Same as Problem 14.34 except the two control station have coordinates in meters of (1,661,107.767, 4,718,275.246, 3,944,587.541) and (1,691,390.245, 4,712,916.010, 3,938,107.274), and the baseline...
-
What variables affect the accuracy of a static survey?
-
Indicate whether the following managerial policy increases the risk of a death spiral:Use of low operating leverage for productionGroup of answer choicesTrueFalse
-
It is typically inappropriate to include the costs of excess capacity in product prices; instead, it should be written off directly to an expense account.Group of answer choicesTrueFalse
-
Firms can avoid the death spiral by excluding excess capacity from their activity bases. Group of answer choicesTrueFalse
Study smarter with the SolutionInn App