Suppose we would like the landing speed of block 2 to be increased to 1.50 m/s. (a)
Question:
Suppose we would like the landing speed of block 2 to be increased to 1.50 m/s.
(a) Should the coefficient of kinetic friction between block 1 and the tabletop be increased or decreased?
(b) Find the required coefficient of kinetic friction for a landing speed of 1.50 m/s. Note that m1 = 2.40 kg, m2 = 1.80 kg, and d = 0.500 m.
Step by Step Answer:
The nonconservative work done by friction changes the me...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
-
Consider the river crossing problem in Example 3-11. Suppose we would like the boat to move directly across the river (in the positive x direction) with a speed of 5.0 m/s. What is the corresponding...
-
Suppose we would like the acceleration of the satellite to be at an angle of 25, and the only quantity we can change in the system is the magnitude of (vector)F 1 . (a) Should the magnitude of...
-
Humans lose consciousness if exposed to prolonged accelerations of more than about 7g. This is of concern to jet fighter pilots, who may experience centripetal accelerations of this magnitude when...
-
Mrs Anh Thuy is a 43 year old lady admitted following an incidence of blurred vision, numbness down the right side and a sharp pain in her head. A neighbour found her on the ground unable to move or...
-
Marginal Cash flows A coworker claims that looking at all this marginal this and incremental that is just a bunch of nonsense, saying, Listen, if our average revenue doesnt exceed our average cost,...
-
Hamilton Processing Company uses a weighted-average process costing system and manufactures a single product'a premium rug shampoo and cleaner. The manufacturing activity for the month of October has...
-
The trial balance showed an excess of ` 970 on the debit side and, therefore, it was transferred to the credit side of the suspense account on 31.12.2008. During the year 2008, the following errors...
-
In the past, Arup Mukherjees tire dealership in Pensacola sold an average of 1,000 radials each year. In the past 2 years, 200 and 250, respectively, were sold in fall, 350 and 300 in winter, 150 and...
-
2 7 . How does verification in auditing help ensure the accuracy of financial statements?
-
You are to design a 11001 sequence detector from a logic input X with a Moore system and using D flip flops. 1) Draw a state diagram with a minimal number of states. 2) find a state table with a...
-
Suppose the block is released from rest with the spring compressed 5.00 cm. The mass of the block is 1.70 kg and the force constant of the spring is 955 N/m. (a) What is the speed of the block when...
-
Find the gravitational potential energy of an 88-kg person standing atop Mt. Everest at an altitude of 8848 m. Use sea level as the location for y = 0.
-
Describe the two generic strategies.
-
A. Use the following information to answer the six questions below. Variable Manufacturing Cost Per Unit20 Variable selling cost per unit25 Selling Price per unit100 Fixed Manufacturing cost per unit...
-
The team has been charged with reviewing quarterly results for the LusterLast moisturizing shampoo, called SatinSmooth. The product is new to the line and is sold mostly in drugstores and grocery...
-
Problem 4 (25 pts.) Consider the function f(x, y) = xy y +2. (i) (5 pts) Find the gradient of f (ii) (10 pts) Find the directional derivative of f at the point (1,2) in the direction of the vector...
-
PROBLEM 4. (15 points) a) Determine the range of charged particles emitted from Phosphorus-32 in iron. (5 points) b) Determine the necessary thickness of an iron plate to attenuate the flux of...
-
(b) In the case of no losses, Moody (1965) recommends the following equation for calculating the mass flow rate of wet steam (ie. two-phase water) through the constriction =A 2(h-h) Variable and...
-
Hydrides typically have rotational energies that are too widely spaced to be able to use Equation 1.99 at room temperature. Find z rot for HF at 300 K by summing the energies directly. Try to obtain...
-
Splitting hairs, if you shine a beam of colored light to a friend above in a high tower, will the color of light your friend receives be the same color you send? Explain.
-
A parallel-plate capacitor has plates of area 0.12 m2 and a separation of 1.2 cm. A battery charges the plates to a potential difference of 120 V and is then disconnected. A dielectric slab of...
-
The chocolate crumb mystery this story begins with Problem. As part of the investigation of the biscuit factory explosion, the electric potentials of the workers were measured as they emptied sacks...
-
Figure shows capacitor 1 (C1 = 8.00F), capacitor 2 (C2 = 6.00F), and capacitor 3 (C3 = 8.00F) connected to a 12.0 V battery. When switch S is closed so as to connect uncharged capacitor 4 (C4 =...
-
Discuss American History
-
Your firm has developed a new lithium ion battery polymer that could enhance the performance of lithion ion batteries. These batteries have applications in many markets including cellphones, laptops,...
-
Need help analyzing statistical data 1. ANOVA) True or false: If we assume a 95% confidence level, there is a significant difference in performance generally across all groups. 2. (t-test) True or...
Study smarter with the SolutionInn App