In Figure, a stationary block explodes into two pieces L and R that slide across a frictionless
Question:
In Figure, a stationary block explodes into two pieces L and R that slide across a frictionless floor and then into regions with friction, where they stop. Piece L, with a mass of 2.0kg, encounters a coefficient of kinetic friction ?L = 0.40 and slides to a stop in distance dL = 0.15 m. Piece R encounters a coefficient of kinetic friction ?R = 0.50 and slides to a stop in distance dR = 0.25 m. What was the mass of the block?
-HR H= 0 de
Step by Step Answer:
We can think of the slidinguntilstopping as an example of kinetic energy converting into thermal e...View the full answer
Fundamentals of Physics
ISBN: 978-0471758013
8th Extended edition
Authors: Jearl Walker, Halliday Resnick
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
-
In Figure a small 50 g block slides down a frictionless surface through height h = 20 cm and then sticks to a uniform rod of mass 100 g and length 40 cm. The rod pivots about point O through angle ?...
-
A block of mass m slides without friction along the looped track shown in Fig. 6-39. If the block is to remain on the track, even at the top of the circle (whose radius is r), from what minimum...
-
Figure shows an initially stationary block of mass m on a floor. A force of magnitude 0.500mg is then applied at upward angle = 20 o . What is the magnitude of the acceleration of the block across...
-
Visit www.guidestar.org and obtain the Form 990 for a local not-for-profit organization. a. Examine Part VIII of the 990 to determine gross receipts of the organization. b. Examine Part IX of the...
-
Describe a put option on interest rate futures. How does it differ from selling a futures contract?
-
Williams Mechanic Services prepared for the following work sheet for the year ended March 31, 20. Required 1. Complete the work sheet. 2. Prepare an income statement. 3. Prepare a statement of...
-
Why is fraud like termites and rust?
-
Kegglers Supply is a merchandiser of three different products. The companys February 28 inventories are footwear, 20,000 units; sports equipment, 80,000 units; and apparel, 50,000 units. Management...
-
(a) A firm is considering to acquire a competitor for $200 million. The resulting increase in free cash flows will be $8 million the first year, increasing by 2% every year thereafter. The firm's...
-
1. Other than the volume of oil or gas found, what factors might affect the return on investment for a particular drill site? 2. Do you think oil and gas exploration companies are likely to...
-
A vessel at rest at the origin of an xy coordinate system explodes into three pieces. Just after the explosion, one piece, of mass m, moves with velocity (-30 m/s)i and a second piece, also of mass...
-
A 20.0 kg body is moving through space in the positive direction of an x axis with a speed of 200 m/s when, due to an internal explosion, it breaks into three parts. One part, with a mass of 10.0 kg,...
-
Output in an economy is given by the production function Y = AK0.3N0.7, where Y is output, A measures productivity, the capital stock AT is fixed at 30, and employment N is fixed at 100. Output...
-
Read the article "Global Supply Chain Woes Reach America's Amish Furniture Makers" (in Blackboard) and respond to these questions (your response must be comprehensive, include additional research...
-
Leaders who lack emotional and social competence undoubtedly can become a liability to organizations, directly leading to employee disengagement, absenteeism.Is this statement is true Discuss.
-
4. For each of the following pairs of matrices, find an elementary matrix E such that AE = B: 4 - -1 0 4 -2 0 (a) A = 3 4 1 B = 3 8 1 2 54 2 10 4 (b) A = ( 2 32 - -1 } ], B = { _ 5 1 -3 -5 -2 -
-
There are many different customer needs of customers who purchase coffee away from their home on a regular basis. (Starbucks, Tim Hortons etc.) Imagine that you are the marketing director at...
-
Consider the Taylor model with the money stock white noise rather than a random walk; that is, mt = t, where t is serially uncorrelated. Solve the model using the method of undetermined coefficients.
-
An op-amp circuit is shown in Figure P12.22. Its parameters are as described in Problem 12.22, except that \(R_{i}=2 \mathrm{k} \Omega\) and \(R_{o}=20 \mathrm{k} \Omega\). Determine the closed-loop...
-
Using the information presented in Problem 13.4B, prepare a partial statement of cash flows for the current year, showing the computation of net cash flows from operating activities using the...
-
Use the data in the steam tables (Appendix A) to answer the following: A. Find the change in internal energy when 50 kg of steam at constant pressure P = 5 bar has its temperature reduced from 500C...
-
The pilot of an airplane executes a constant-speed loop-the loop maneuver in a vertical circle. The speed of the airplane is 300 mi/h, and the radius of the circle is 1 200 ft. (a) What is the pilots...
-
A penny of mass 3.10 g rests on a small 20.0-g block supported by a spinning disk (Fig. P6.60). The coefficients of friction between block and disk are 0.750 (static) and 0.640 (kinetic) while those...
-
A space station, in the form of a wheel 120 m in diameter, rotates to provide an artificial gravity of 3.00 m/s2 for persons who walk around on the inner wall of the outer rim. Find the rate of...
-
The QRS Inc. is engaged in games and amusement business. It has the following data for the year: Collections: Cockpit P700,000 Professional boxing 950,000 Amateur boxing 72,000 Palozebo games 50,000...
-
2 m A 2.5 Soru 9: Arl 60 kg olan bir lamba ekildeki kablo sistemi ile tavana sabitlenmitir. ekil simetriktir. Buna gre aadaki oktan semeli cevab olan 2 soruyu cevaplaynz. Kablo ap 20 mm iken kabloda...
-
Chapter 5 covered the various functions (Router, VPN, NAT, RDP Gateway, RAS Gateway) that are available/can be used after the Remote Access Role is installed.Identify and describe 2 of them including...
Study smarter with the SolutionInn App