A 2.0-kg box rests on a plank that is inclined at an angle of 65° above the
Question:
2.0 kg 65°
Step by Step Answer:
Let the x axis point upward parallel to the plank and the y ...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 3.5-kg box rests on a horizontal frictionless surface in contact with a spring of spring constant 6800 N/m. The spring is fixed at its other end and is initially at its uncompressed length. A...
-
A steel washer is suspended inside an empty shipping crate from a light string attached to the top of the crate. The crate slides down a long ramp that is inclined at an angle of 37 above the...
-
A sled is dragged along a horizontal path at a constant speed of 1.5 m/s by a rope that is inclined at an angle of 30.0° with respect to the horizontal. The total weight of the sled is 470 N. The...
-
1.think about the evolution of the food industry, What was it in the past, and what will it be in the future? How will the 4 p's of marketing evolve within the industry you selected? 2.What is one...
-
Determine the x and y components of F1 andF2. F = 200 N 30 5 = 150 N
-
What does the following output? A. peter B. wendy C. Does not compile due to line x1 D. Does not compile due to line x2 E. Does not compile due to another reason F. Throws an exception at runtime var...
-
On March 23, 2005, a hydrocarbon vapor cloud explosion occurred at the isomerization process unit at BP's Texas City Refinery in Texas City, Texas, killing 15 workers and injuring more than 170...
-
Legacy issues $325,000 of 5%, four-year bonds dated January 1, 2016, that pay interest semiannually on June 30 and December 31. They are issued at $292,181 and their market rate is 8% at the issue...
-
A person who proves that at the time of the commission of the offense, that the person as a result of a severe mental disease or defect did not know the wrongfulness of his actions is?
-
For this particular assignment, the data of different types of wine sales in the 20th century is to be analyzed. Both of these data are from the same company but of different wines. As an analyst in...
-
At a playground, a 22-kg child sits on a spinning merry-go-round, as shown from above in FIGURE 6-71. The merry-go-round completes one revolution every 6.2 s, and the child sits at a radius of r =...
-
A wood block of mass m rests on a larger wood block of mass M that rests on a wooden table. The coefficients of static and kinetic friction between all surfaces are s and k, respectively. What is the...
-
Show that in the Bethe approximation the entropy of the Ising lattice at \(T=T_{C}\) is given by the expression \[ \frac{S_{c}}{N k}=\ln 2+\frac{q}{2} \ln \left(1-\frac{1}{q}...
-
What is a measure of central tendency?
-
Gross profit is equal to a. sales minus cost of goods sold. b. sales minus total operating expenses. c. sales minus advertising expenses. d. sales minus depreciation expenses.
-
How prevalent are psychological disorders?
-
What is the difference between trading securities and available-for-sale securities?
-
Draw a stem-and-leaf plot for each data set in Problems 28-31. Data set A Data set A: The annual wages of employees at a small accounting firm are given in thousands of dollars. 35 25 25 16 14 1 2 2...
-
Record the cash purchase of $600 of office supplies in the province of Saskatchewan, where the PST is 6%.
-
1. What are some current issues facing Saudi Arabia? What is the climate for doing business in Saudi Arabia today? 2. Is it legal for Auger's firm to make a payment of $100,000 to help ensure this...
-
A sinusoidal sound wave moves at 343 m/s through air in the positive direction of an x axis. At one instant, air molecule A is at its maximum displacement in the negative direction of the axis while...
-
In Figure sound waves A and B, both of wavelength , are initially in phase and traveling rightward, as indicated by the two rays. Wave A is reflected from four surfaces but ends up traveling in its...
-
A trumpet player on a moving railroad flatcar moves toward a second trumpet player standing alongside the track while both play a 440 Hz note. The sound waves heard by a stationary observer between...
-
Perform one step of row reduction, in order to calculate the values for x and y by back substitution. Then calculate the values for x and y. Also calculate the determinant of the original matrix....
-
1 23 13 23 -3 23 23 23 23 Let A be the matrix of the quadratic form below. It can be shown that the eigenvalues of A are 6, 9, and 12. Find an orthogonal matrix P such that the change of variable x =...
-
Solve for X. -2] 9 2 x + 1 } = 3 3 x [5
Study smarter with the SolutionInn App