4. A block attains a velocity of 12 m/sec in a distance of 40 m starting from rest. Determinethe coefficient of kinetic friction between the block and the floor.250 NP 125 N5. The car is given a leftward aceeleration of 2.500 m/sec The sum of the friction forces FAand Fs under the wheels is 50 N. Find the values of RA, Rs and P.CGP.2.500mIm2m2mRAW-1,500NRa

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Answered: A block attains a velocity of 12 m/sec…

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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corre hacia acả v constante rueda hacia ac An acrobat who is on the lateral surface of a cylinder, moves his legs and moves the cylinder with constant velocity. The cylinder is on a rough horizontal surface (with friction). If the coefficient of friction between the shoes and the cylinder is mu = 0.21 determine the force of friction %3D between the cylinder and the acrobat A. 128.6 N B. 100 N C. 12.8 N D. 200 N E. 342 N F. ON G. 9.8 N H. None of the above 1. 21 N J. 132 N
A friction experiment is performed on a planet that has the same mass as Earth but half the radius. A 1.0-kg block is pulled along a horizontal dynamics track with a horizontal force of magnitude 15.0 N. If the coefficient of kinetic friction between the block and the track is 0.3, determine the acceleration of the block. O a. 14.26 m/s^2 O b. 12.06 m/s^2 O. 3.24 m/s^2 Od. 15.00 m/s^2
1. For the pulley system shown, Mi has a mass of 42 kg and an associated coefficient of friction of μ=0.45. M2 has a mass of 18 kg and an associated coefficient of friction of μ2=0.32. Determine the minimum value of mass Mo that will cause mass Mo to fall. Ans: Mo=74.4 kg M. M. DOE M
A horizontal carousel is rotating around its axis with constant angular velocity w. On the carousel there is a straight track passing through its middle. A cart of mass m is traveling along the track with constant velocity v relative to the carousel. Note that there is friction between the cart and the carousel. FR w XR a. Find the magnitude of the side force (that is in the direction of YR) that the track applies on the cart when the cart passing L. through point xR = Select one: a. 2mwv b. mwv C. mwv + mw² L d. mw² L e. 2mw²L 2mwv + mw² L
13. 54-kg box is sitting on the floor of a level railroad car which is moving forward with a speed of 25 m/s and accelerating at a rate of 5.6 m/s2. What is the strength, in Newtons, of the frictional force acting on the box if it does not slide on the floor? O A. 0 O B. 25 N O C. 54 N O D. 248 N O E. 255 N O F. 302 N O G. 520N O H. 1350 N Back Save & Continue 2020 BYU 99+
A friction experiment is performed on a planet that has the same size as Earth but half the mass. A 1.0-kg block is pulled along a horizontal dynamics track with a horizontal force of magnitude 15.0 N. If the coefficient of kinetic friction between the block and the track is 0.3. determine the acceleration of the block. O a. 2.94 m/s^2 O b.3.24 m/s^2 O c. 9.12 m/s^2 O d. 13.53 m/s^2
ASAP
8. A block is at rest on a rough inclined plane and is connected to an object with the same mass as shown. The rope may be considered massless; and the pulley may be considered frictionless. The coeffi- cient of static friction between the block and the plane is us; and the coefficient of kinetic friction is k 0 A. g D. g - Hk sin(0) m a. What is the magnitude of the static frictional force acting on the block? B.m g [1 - sin(0)] C. mg D. mg cos(0) B. g - Hk cos(0) A. m g sin(0) E. mg [1 - cos(0)] b. If the rope were cut between the block and the pulley, what would be the magnitude of the acceleration of the block down the plane? C. g [sin(0) - μ cos(0)] sin(0)] c. If the mass of the suspended object is doubled, what will be the acceleration of the block up the plane? B. g [2 tan(0) - uk sin(0)] D. 2g [μ sin(0) - cos(0)] m E. g [tan (0) A. g [2 - μk sin(0)] C. g [2 cos(0) - μ sin(0)] E. g [2 sin(0) Hk Cos (0)]. -
5. A mass of 10kg sits on a level surface. One end of the surface is raised until the block begins to slide down the ramp at a constant velocity and angle of 20⁰. a. What is the coefficient of friction between the block and the incline plane? b. What is the weight of the Block,w?
Asap
8. The wheels fall off Beatrice's suitcase, so she ties a rope to it and drags it along the floor at the airport terminal. The rope makes a 40.0 degrees angle with the horizontal. The suitcase has a mass of 36.10kg and Beatrice pulls on a rope with a force of 65.10 N. What is the magnitude of normal force acting the on the suitcase due to the floor? a. 40.43N b. 311N c. 9.36N d. 312.30N e. 310.32N
KTMDG A box slides from rest down a curved slope. Its initial height is 21 m above the ground, and it comes off the slope 7_m above the ground. How fast is the box moving as it leaves the slope? Assume friction is negligible. A 22. D. 28.11 m/s 15.06 m/s 15.74 m/s 21.52 m/s E. F. 13.37_m/s 16.57 m/s MacBook Pro ن د نے A. B. C. 1--1 Pigshow.jpeg DPig show.jpeg

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A block attains a velocity of 12 m/sec in a distance of 40 m starting from rest. Determine the coefficient of kinetic frietion between the block and the floor. 250 N P-125 N