If a 150-lb crate is released from rest at A, determine its speed after it slides 30
Question:
30 ft 30°
Step by Step Answer:
AIF 0 Ne 150 cos 30 ...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
-
If the coefficient of kinetic friction between the block and the table in Fig. 4.40 is 0.560, and m1 = 0.150 kg and m2 = 0.250 kg, (a) What should m3 be if the system is to move with a constant...
-
If the coefficient of kinetic friction between a 35-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...
-
A 200-g particle is released from rest at point A along the horizontal diameter on the inside of a frictionless, hemispherical bowl of radius R = 30.0 cm (Fig. P8.52). Calculate (a) The gravitational...
-
Create a weighted scoring model to determine grades for a course. Final grades are based on three exams worth 20%, 15%, and 25%, respectively; homework is worth 15%; and a group project is worth 25%....
-
For the tree in Figure 4.70: a. Which node is the root? b. Which nodes are leaves?
-
Suppose you are working for a financial institution and you are asked to implement a fraud detection system. You plan to use the following information: When the card holder is travelling abroad,...
-
Write the expression in the form \(D \sin (\omega t+\phi)\). \(\cos t+\frac{1}{3} \sin t\)
-
Borke Company has a credit balance of $3,000 in Allowance for Doubtful Accounts. The estimated bad debt expense under the percentage-of-sales basis is $4,100. The total estimated uncollectibles under...
-
3. Convert the following FA to a regular expression 2. b. S1 S 0 S2 S3 ST 4. Prove the following languages are not regular a. {Onion | n>=2} b. 012n n=1;
-
Don Jones, senior-in-charge of the audit of Stark Industries, has decided to test the following two controls for Stark's revenue process. All sales invoices are supported by proper documentation,...
-
Two smooth billiard balls A and B have an equal mass of m = 200g. If A strikes B with a velocity of (vA)1 = 2 m/s as shown, determine their final velocities just after collision. Ball B is originally...
-
Determine the tension developed in the two cords and the acceleration of each block. Neglect the mass of the pulleys and cords. Hint: Since the system consists of two cords, relate the motion of...
-
The radius of Earth is 6370 km, and its orbital speed about the Sun is 30 km/s. Suppose Earth moves past an observer at this speed. To the observer, by how much does Earth's diameter contract along...
-
What strategies do inclusive leaders employ to champion diversity, equity, and inclusion, creating environments where all individuals feel valued, heard, and empowered to contribute their unique...
-
A water sample from a lake has a measured alkalinity of 0 . 8 meq / L . In the early morning, a monitoring team measures the lake s pH as part of the acid rain study and finds a pH of 6 . 0 . The...
-
What is COBA's existingsocial media strategy forFacebook,Instagram,&LinkedIn? Be as specific as possible. Make sure to provide strong support for your arguments. www.facebook.com/coba.tamuct...
-
Determine the tension developed in each cord required for equilibrium of the 25 kg block. Let the angles be a = 50 and 3 = 35. A B 4 3 5 a C The tension in each cord is: FDE = N, FCD = D F B N, FCB=...
-
How do strategic leaders effectively communicate their vision, inspiring commitment and alignment among stakeholders to drive organizational change and achieve strategic objectives?
-
Consider an agent \(a\) with piecewise linear utility function \(u^{a}(x)=x\) for \(x \leq x_{0}\) and \(u^{a}(x)=x_{0}+a\left(x-x_{0} ight)\) otherwise, for some \(a \in(0,1)\), and an agent \(b\)...
-
Describe basic managerial approaches to implementing controls and how these are implemented.
-
Investment X offers to pay you $3,000 per year for eight years, whereas Investment Y offers to pay you $5,000 per year for four years. Which of these cash flow streams has the higher present value if...
-
What is a cost object, direct cost, an indirect cost? Define prime cost, conversion cost, and manufacturing overhead.please provide source
-
Nori Company makes custom chairs. The below are the sales and production budgets. Budgeted Sales in units: February 9,000 March 8,700 April 8,900. Budgeted Production in units: February 9,300 March...
-
Auditors may be more likely to accept a client firm's questionable financial statements if infractions have accrued over time. Remedy: Be alert for even trivial ethical infractions and address them...
Study smarter with the SolutionInn App