fyO JaG aG ipG toG toocps.instructure.com/courses/1448882/assignments/23625860?module_item_id%3D44257219EDngCoefficients of Friction1. Once the crate in Sample Problem D is in motion, a horizontal force of53 N keeps the crate moving with a constant velocity. Find u the coeffi-cient of kinetic friction, between the crate and the floor. fyG.O JaOCBC BCLM!!G aG iptoG toocps.instructure.com/courses/1448882/assignments/23625860?module_item_id=442572192. A 25 kg chair initially at rest on a horizontal floor requires a 165 N hori-zontal force to set it in motion. Once the chair is in motion, a 127 N hor-izontal force keeps it moving at a constant velocity.a. Find the coefficient of static friction between the chair and the floor.b. Find the coefficient of kinetic friction between the chair and the floor.

Note: In part (1) missing data of part (D). Part (2): Given: The mass of the object is 2 kg. The…

Answered: 2. A 25 kg chair initially at rest on a…

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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Migo exerts a horizontal force on a 2 kg box located on an inclined plane with an angle of θ= 37 degrees. The coefficient of static and kinetic friction between the box with an inclined plane is μs = 0.4 and μk = 0.2, respectively. A. What is the minimum force for the box to move exactly B. What is the maximum force for the box to move exactly C. If the box is falling at an acceleration of 0.5 m/s^2, what is the force applied
1.
Explain Newton's second Law and solve related problems Given a block which is at rest on a perfectly flat smooth table. You push with your hand horizontally on the block with some force. If the mass of the block = 2.00 kg and the acceleration of the block = 5.00 m/s2 then what is the force on the block from your hand in SI units? a. 2.50 N b. 0.100 N c. 0.400 N d. 10.0 N e. zero
A restaurant manager pushes a box of melons horizontally with a force of magnitude 150 N. The box moves along the floor with a constant acceleration in the same direction as the applied force. Which statement is more precise regarding the magnitude of the kinetic friction force acting on the crate? a. It is greater than 150 N. b. It is equal to 150 N. c. The friction force must be zero. d. The kinetic friction force is constantly decreasing. e. It is less than 150N.
A person pushes a box with a small constant force to move the box along the floor at a constant speed in a straight-line path. Which of the following statements is true? a. The net force on the box is zero. b. There are no other forces on the box (besides the person’s push.) c. The net force on the box must be greater than zero to keep the box moving. d. The box has an acceleration that is not zero. e. [Both (c) and (d) are true.]
An airborne body of mass, m=64.3kg, is pushed straight upward by a vertical force, Fv=641N. a.What is the net force in the vertical irection? Let up be the positive direction, use Fv and let Fg be the wieght of the body.b. what is the magnitude of the net force exerted on the object in newtons?c. what is the acceleration of the body in m/s2?
339 8 20 A 20 kg box is resting on horizontal surface initially. Then a F =50 N force pulls on the angle of 20 degrees above horizontal. The kinetic frictional coefficient is 0.20. 6. What is the horizontal component of the force Fx ? box by a cord at an FN =soNo a 47 N C. 18.2 N b. 17.1 N d. 29 N Fx 7. What is the normal force acting on the box? 777 c. 196 N a. 47 N b. 179 N d. 125 N M9
A 75 kg parent and a 22 kg child meet at the center of an ice rink. They place their hands together and push hard enough to slide apart. a. Is the force experienced by the child more than, less than, or the same force experienced by the parent? b. Is the acceleration of the child more than, less than, or the same acceleration as the parent? c. If the acceleration of the child is 2.3 m/s2 in magnitude, what is the magnitude of the force of the parent's push on the child?
3. Two blocks A and B are connected by a rope and pulled with some force F along a frictionless horizontal surface, as shown. B a. Draw a free-body diagram for each block. b. Write Newton's second law for each block and obtain equations for the x and y directions. c. If the tension in the rope is given by T = F/3, find the ratio of the masses, ma/mg.
3. Am=12.0 kg object is placed on a bathroom scale in an elevator. a. Draw a free body diagram of the object. Label the forces. Determine the apparent weight (the weight that would show in the scale) of the object if. b. The elevator is at rest. c. The elevator is rising at a constant velocity. d. The elevator is accelerating upward at 1.5 m/s/s. m e. The elevator is accelerating downward at 1.5 m/s/s. f. The elevator is accelerating downward at 10 m/s/s.
C. a. 1. Alan (m = 50 kg) and Diego (m = 40 kg) are standing on a frictionless ice rink, facing each other, when Alan pushes Diego. Diego moves with an acceleration of 1 m/s². What is the magnitude of Alan's acceleration? a. .8 m/s² b. 1.0 m/s² c. 1.25 m/s² d. Cannot be determined 2. How much horizontal force must a girl apply to a 50 kg cabinet to accelerate it at .4 m/s² along a horizontal surface if there is a friction force of 70 N? b. 50 N e. 90 N 3. Students design an experiment to determine the relationship between mass and acceleration where a cannon fires varying masses. Motion sensors are used to measure the velocity of the cannon ball while it is in the cannon. A graph of one of the trials is shown to the right. The mass is then increased for the next trial while keeping everything else the same. What should the velocity vs. time graph look like for this next trial? The second trial is the dashed line. 120 100 80 60 40 20 0 0 120 100 80 60 40 20 a. 20 N d. 80 N D Velocity…
13. A7.5 kg backpack is sliding across the floor. The coefficient of friction between the backpack and the floor is 0.20. Answer the following: b) What is the normal force between the backpack and the floor? Your answer: O 1.5 N O 7.4 N O 15 N O 74 N

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