You want to push a 65-kg box up a 25 ramp. The coefficient of kinetic friction between
Question:
Step by Step Answer:
Draw a diagram and use Newtons laws of motion A...View the full answer
Physics
ISBN: 978-0077339685
2nd edition
Authors: Alan Giambattista, Betty Richardson, Robert Richardson
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
-
Two adults and a child want to push a wheeled cart in the direction marked x in Fig. 4.36. The two adults Rush with~ horizontal forces F 1 and F 2 as shown in the figure. (a) Find the magnitude and...
-
You push a 67-kg box across a floor where the coefficient of kinetic friction is k = 0.55. The force you exert is horizontal. (a) How much power is needed to push the box at a speed of 0.50 m/s? (b)...
-
Suppose you wish to compare the work done by pushing a box on rollers up a ramp to the work done if you lift the box straight up to the same final height. a. What work is required to lift a 100N box...
-
Jackson Corporation has borrowed $2 million from a local bank under a long-term debt agreement whereby the loan has to be repaid in two years' time. The agreement was violated and the debt became...
-
Assume Candy Corner, Inc., purchased conveyor-belt machinery. Classify each of the following expenditures as a capital expenditure or an immediate expense related to machinery: a. Sales tax paid on...
-
Imagine a restaurant that is lacking any kind of control. Describe the negative and positive aspects of this environment and then answer the following question: Why is control necessary?
-
Explain the accounting for unexpected gains and losses.
-
In 2010, Elbert Corporation had net cash provided by operating activities of $531,000; net cash used by investing activities of $963,000; and net cash provided by financing activities of $585,000. At...
-
Corporations are subject to income taxes and must estimate their income tax liability when preparing financial statements, True or False True False
-
Sparkling Clean Dry Cleaners Inc. began operations on January 1, 2011. In its first year, the following transactions occurred: 1. Issued common shares for $150,000 cash. 2. Purchased dry cleaning...
-
A skier with a mass of 63 kg starts from rest and skis down an icy (frictionless) slope that has a length of 50 m at an angle of 32 with respect to the horizontal. At the bottom of the slope, the...
-
An airplane is cruising along in a horizontal level flight at a constant velocity, heading due west. (a) If the weight of the plane is 2.6 104 N, what is the net force on the plane? (b) With what...
-
A new system that bills corporate clients is under development, and there is a discussion over how much toinvest in error checking and control. One option has been put forward so far, and initial...
-
Everyone at some point has had issues with time management and procrastination in their work life, academic life and social life. How have you been handling time management issues in your life? Have...
-
You want to make three peanut butter and jelly sandwiches. What is the best way to make them that's consistent with an agile mindset? Create a sandwich assembly line, applying all the peanut butter...
-
1 pts Joan Reed exchanges commercial real estate that she owns for other commercial real estate, plus $50,000 cash. The following additional information pertains to this transaction: Property given...
-
It is believed that 86% of Padres fans would have liked Trevor Hoffman to remain in San Diego to finish out his career as a San Diego Padre. You would like to simulate asking 10 Padres fans their...
-
The videos below cover why American higher education, including public colleges and universities, is so expensive. They also explore factors that have resulted in the current student loan debt...
-
Suppose the forward rate F(t,T ) under the risk neutral measure is governed by Suppose the forward rate F(t,T ) under the risk neutral measure is governed by and consider the coupon bond with n...
-
Show that every group G with identity e and such that x * x = e for all x G is abelian.
-
Figure shows a plot of potential energy U versus position x of a0.200 kg particle that can travel only along an x axis under the influence of a conservative force. The graph has these values: UA =...
-
A single conservative force F(x) acts on a 1.0 kg particle that moves along an x axis. The potential energy U(x) associated with F(x) is given by where x is in meters. At x = 5.0 m the particle has a...
-
A worker pushed a 27 kg block 9.2 m along a level floor at constant speed with a force directed 32o below the horizontal. If the coefficient of kinetic friction between block and floor was 0.20, what...
-
Long-term liabilities are shown in two places in the business firm's balance sheet depending upon when the long-term liabilities are scheduled for payment. True False
-
Julio is single with 1 withholding allowance. He earned $1,025.00 during the most recent semimonthly pay period. He needs to decide between contributing 3% and $30 to his 401(k) plan. If he chooses...
-
Acquirer firm plans to launch a takeover of Target firm. The manager of Acquirer indicates that the deal will increase the free cash flow of the combined business by $13.6m per year forever. The beta...
Study smarter with the SolutionInn App