4. Two blocks of mass m₁ = 5.0 kg and m₂ = 1.8 kg are tied together by a string of negligible mass. The coefficient of kinetic friction between the blocks and the horizontal surface is μ = 0.15. Mass m₁ is being pulled by a force of 21 N at an angle of 0 = 35° above the horizontal. (a) Draw a free-body diagram for each block. (b) Calculate the normal force acting on each block. (c) Find the magnitude and direction of acceleration of mass m₂. Hint: the accelera- tion is the same in magnitude and direction for both blocks. (d) Determine the magnitude of the tension in the string. Take g = 9.81 m/s² and show all your work. -x m₂ m₂ 35°

4. Two blocks of mass m₁ = 5.0 kg and m₂ = 1.8 kg are tied together by a string of negligible mass. The coefficient of kinetic friction between the blocks and the horizontal surface is μ = 0.15. Mass m₁ is being pulled by a force of 21 N at an angle of 0 = 35° above the horizontal. (a) Draw a free-body diagram for each block. (b) Calculate the normal force acting on each block. (c) Find the magnitude and direction of acceleration of mass m₂. Hint: the accelera- tion is the same in magnitude and direction for both blocks. (d) Determine the magnitude of the tension in the string. Take g = 9.81 m/s² and show all your work. -x m₂ m₂ 35°

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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Use the value of g = 9.80 [m/s^2]
A box full of books rests on a wooden floor. The normal force the floor exerts on the box is 317 N. A) You push horizontally on the box with a force of 120 N, but it refuses to budge. What can you say about the coefficient of static friction between the box and the floor? (Pick from the multiple-choice for this question) B) If you must push horizontally on the box with a force of at least 150 N to start it sliding, what is the coefficient of static friction? C) Once the box is sliding, you only have to push with a force of 120 N to keep it sliding at constant speed. What is the coefficient of kinetic friction?
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Cart 1 has a mass of 20.0 kg, cart 2 has a mass of 10.0 kg, and Cart 3 has a mass of 15.0 kg. Coefficient of Kinetic friction is 0.10. A third cord, which pulls on cart 1 and is at an angle of 23° above the horizontal, has a tension of magnitude 150 N.(hint: FN of cart 1 is NOT equal with Fg). Draw FBD for each cart. a) Determine the magnitude of the acceleration of the carts. b) Determine the magnitude of the tension (T2) in the cord between m3 and m2. c) Determine the magnitude of the tension (T1) in the cord between m2 and m1
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You are helping your friend move a new refrigerator into his kitchen. You apply a horizontal force of 263 N in the negative x direction to try and move the 53 kg refrigerator. The coefficient of static friction is 0.70. (a) How much static frictional force does the floor exert on the refrigerator? Give both magnitude (in N) and direction. magnitude N direction -Select--- ✓ (b) What maximum force (in N) do you need to apply before the refrigerator starts to move? N
#2 and 3
help me those question
Two blocks with masses m1= 50 kg , m2= 100 kg are connected with a rope. Blocks are pulled with a 20.0 N force making a=30.0 degree angle withhorizontal on a frictionless surface. first question: Show all the forces on the two blocks by drawing a seperate diagram for each block. second question: apply the newton rules and find the tension (T=?) in the rope in between the two blocks.
2. One body with mass m₁ 1.0000 kg moves down on an inclined plane with an angle = 45° without friction. The acceleration along the inclined plane is a₁. A second body with mass m₂ = 1.0001 kg moves down on an identical inclined plane and the friction is described by the coefficient of kinetic friction Mk = 0.25. The acceleration of the second body along the inclined plane is a2. (a) Identify and draw all the forces. Draw the free-body diagrams for both bodies. (b) Determine the ratio between the two values of acceleration a2 / a₁. (You do not know the value for the gravitational acceleration g, the experiment takes place on an unknown planet). Show your work. A numerical value is required for (b). SHOW YOUR WORK means SHOW YOUR WORK starting with Newton's Second Law. Write Newton's Law in SYMBOLS for each body. m₁ = 1 kg m₂ = 1.0001 kg No friction 0 = 45° a₁ HK = 0.25 0 = 45° 22
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