A hand pushes horizontally with a constant force on two blocks stacked against a wall (u, between finger and block A is zero). The blocks and wall do not accelerate. The mass of block A is greater than that of block B. The coefficient of static friction between the block and wall is the same as the coefficient of static friction between the two blocks. Draw a separate free-body diagram for each block. For each force on your free-body diagrams, be sure to indicate: • the type of force (e.g., tension, weight ...), • the object on which the force is exerted, and • the object exerting the force. a. Rank the magnitudes of the vertical forces that you have shown from largest to smallest. Explain how you applied Newton's second and third laws to obtain your answer. b. Suppose the hand pushes horizontally with a constant force that is twice as large as in part a. Would the friction force exerted by the wall be greater than, less than, or equal to the friction force by the wall in part a? (Assume the blocks and wall do not accelerate.) Explain. 2F A B B

A hand pushes horizontally with a constant force on two blocks stacked against a wall (u, between finger and block A is zero). The blocks and wall do not accelerate. The mass of block A is greater than that of block B. The coefficient of static friction between the block and wall is the same as the coefficient of static friction between the two blocks. Draw a separate free-body diagram for each block. For each force on your free-body diagrams, be sure to indicate: • the type of force (e.g., tension, weight ...), • the object on which the force is exerted, and • the object exerting the force. a. Rank the magnitudes of the vertical forces that you have shown from largest to smallest. Explain how you applied Newton's second and third laws to obtain your answer. b. Suppose the hand pushes horizontally with a constant force that is twice as large as in part a. Would the friction force exerted by the wall be greater than, less than, or equal to the friction force by the wall in part a? (Assume the blocks and wall do not accelerate.) Explain. 2F A B B

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

See similar textbooks

Related questions

Q: Required information A photograph of the NASA Apollo 16 Lunar Module (abbreviated by NASA as the LM)…

A: To find: The force in the member AB, AC and AD. Given: The coordinates point A, B, C and D is…

Q: A rough board 10 meters long lies horizontally on the ground. A box is placed at the centre of the…

A: The free-body diagram of the box on the board is shown below. Here, m denotes the mass, θ denotes…

Q: Two blocks of the same mass, m, are connected by a light string and rest on the slope and in the…

A: According to the given data Both block has mass =m

Q: Mary and her sister are playing with a cardboard box on the neighborhood hill. Mary climbs into the…

A: (a) Draw the free body diagram: Apply Newtons second law in vertical direction direction: N-mg…

Q: Question 2 Consider the two blocks shown above, connected together by a massless rope around a…

Q: 3. Two blocks of masses mi-10 kg and m2 = 40 kg are coefficient of kinetic friction between m, and…

A: Given data as per question m1=10 kgm2=40 kgμ=0.375

Q: At an airport, luggage is unloaded from a plane into the three cars of a luggage carrier, as the…

Q: Determine the minimum weight of block B that will keep it at rest while a force P starts blocks A up…

Q: For the delivery truck shown: The mass of the truck is 4000 kg. The horizontal distance from the…

Q: A large shipping crate is at rest on the horizontal floor of a warehouse. The coefficient of static…

A: Given data: The static coefficient of friction is, μs=0.5. The coefficient of kinetic friction is,…

Q: A block of mass 14 kg is resting on a table is pulled by a force of 100 N. The coefficient of…

A: Given Mass, m = 14 kg Force, F = 100 N

Q: 1. The coefficients of static and kinetic friction between the 100 - kg block and the inclined plane…

Q: A car making a turn on a dry banked highway ramp is experiencing friction. The coefficient of static…

A: To draw: The vector component for the force and static friction and the normal force and also…

Q: Show on a free-body diagram how a normal force always remains perpendicular to the contact surface,…

A: to Show on a free-body diagram how a normal force always remains perpendicular to the contact…

Q: An 90.17 kg person is half way up a uniform ladder of length 3.939 m and mass 29.49 kg that is…

A: Here we will apply equilibrium conditions.

Q: 2) Figure 3 illustrates a first block having mass M1 positioned on a horizontal tabletop. The…

A: Given figure To determine (a) Work done by gravity onto the system of 2 blocks; (b) Work done by…

Q: 6.9. A truck moving at 100 km/h carries a steel girder that rests on its wooden floor. What is the…

A: Consider the diagram shown below for the given system. The velocity of the truck is

Concept explainers

Forming and Shaping

Metal forming is a category of metalworking process through which the material can be given the desired shape and size by subjecting it to plastic deformation, where the component undergoes bulk deformation process upon application of loads. Unlike the shearing and machining process, the material does not undergo up to a failure point as indicated in the stress-strain curve. Hence, the stresses induced during the forming process are greater than yield strength but less than the failure strength of the material. The process does not lead to the loss of material, so it can be said to be an economical process. During forming, the material is subjected to tensile forces, compressive forces, bending, and shearing loading conditions. The material should possess the property of ductility to undergo the forming process.

Question

**Horizontal Forces on Blocks Against a Wall**

A hand pushes *horizontally* with a constant force on two blocks stacked against a wall (\(\mu\), between finger and block A is zero). The blocks and wall do not accelerate. The mass of block A is greater than that of block B. The coefficient of static friction between the block and wall is the same as the coefficient of static friction between the two blocks.

- **Task**: Draw a separate free-body diagram for each block. For each force on your free-body diagrams, be sure to indicate:
- The type of force (e.g., tension, weight...),
- The object on which the force is exerted, and
- The object exerting the force.

a. Rank the magnitudes of the *vertical* forces that you have shown from largest to smallest. Explain how you applied Newton's second and third laws to obtain your answer.

b. Suppose the hand pushes *horizontally* with a constant force that is twice as large as in part a.

- Would the friction force exerted by the wall be greater than, less than, or equal to the friction force by the wall in part a? (Assume the blocks and wall do not accelerate.) Explain.

**Diagrams Explanation:**

1. **Initial Force Diagram**: A hand applies a horizontal force \( F \) on block A, which is in contact with block B. Both blocks are against a wall on the right.

2. **Increased Force Scenario**: The hand now applies a force \( 2F \) on block A. This scenario is used to evaluate the change in frictional forces when the force is doubled.

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 2 steps with 2 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.

Similar questions

Problem 6: At a post office, a parcel that is an m kg box slides down a ramp inclined at an angle θ with the horizontal, as shown. The coefficient of kinetic friction between the box and the ramp is μK, and the coefficient of static friction for the same is μS. Notice that the coordinate axes have been chosen with the x axis directed up the incline, as shown. Part (b) Input an expression for the net force in the x direction consistent with the coordinate axes on the diagram. Express your answer in terms of the mass of the box, m, the acceleration due to gravity, g, the angle of the incline, θ, the magnitude of the normal vector FN, and appropriate coefficients of friction. The coefficient of kinetic friction between the box and the ramp is μK, and the coefficient of static friction for the same is μS. Part (c) Input an expression for the net force in the y direction consistent with the coordinate axes on the diagram. Express your answer in terms of the mass of the box, m, the…
The uniform cylindrical drum D weighs 42.0 lb. The coefficient of static friction at all surfaces is 0.600, and the coefficient of kinetic friction is 0.500 at all surfaces. The cylinder is pushed by force P applied to a pad as shown, and it is intended for the cylinder to translate horizontally without rotation. a) Calculate the minimum force P required.b) Calculate the acceleration of the drum.
Lost on this one, any help would be appreciated. Check all possible motions
Assume that there are no frictional forces between the pulleys and the strings, and the strings are mass-less. The frictional coefficient between the1 kg and 2 kg is 0.05, the frictional coefficient between the 2 kg and 5 kg is 0.1, and the frictional coefficient between the 5 kg and the table is 0.2. (a) Draw free-body diagrams for each mass? (b) Calculate the magnitudes of normal forces and frictional forces?(c) If we release 4 kg and 3 kg from rest what are the accelerations of each mass? (System has two different accelerations)(d) Calculate the tensions in each string?
2 A ladder 5 m long and weighing 260 N is placed against a vertical wall at an inclination of 30 ^ 0 with wall. A wan weighing 780 N climbs the ladder. When he is at a distance of 1.64 m along the ladder from lower all contact surfaces? end, the ladder slips. What is the coefficient of friction assuming it to be same for
A pile-driver hammer has a mass of 300 kg and is to be raised 16 m in 4 sec. The total friction on the guides is constant at 400 N. What constant pull must be exerted on the cable?
A racetrack curve has radius 90.0 m and is banked at an angle of 12.0. The coefficient of static friction between the tires and the roadway is 0. 400. A race car with mass 1200 kg rounds the curve with the maximum speed to avoid skidding. Part A As the car rounds the curve, what is the normal force exerted on it by the road? Express your answer with the appropriate units. Value Units Submit Request Answer Part B What is the car's radial acceleration? Express your answer with the appropriate units. Value Units Arad = Submit Request Answer
2. A 250-lb block Is initially at rest on a flat surface that is inclined at 30°. If the coefficient of kinetic friction is 0.30 and the coefficient of static friction is 0.40, find the force required to start the block moving up the plane. 250 1b. 30°
5. Three blocks are connected over two frictionless, massless pulleys by two inextensible, massless cords as shown in the figure. There is friction between block m and the horizontal surface of the table. If the block m, moves downward after being released from rest, then what is the magnitude of the acceleration of the blocks and the magnitude of the tension in the cords in terms of the masses of the blocks m, , and ms, the coefficient of kinetic friction between block my and the table, a. and the acceleration due to gravity, g. Include a force diagram or free-body diagram of the situation.
A 75 N force, inclined at an angle a = 45° as shown in Figure 3.5, pulls a 100 N block. The coefficient of static friction between the block and the floor is 1.3, and the coefficient of kinetic friction is 1.1. Determine the friction force between the block and the floor.
3. Two blocks, masses m₁ and m2, on a horizontal, frictionless surface are being pulled by a massless, unstretchable rope that goes over a frictionless pulley and is connected to a block of mass m3. Assumer two blocks move together. The coefficient of friction between block 1 and block 2 is . Find the force that block 2 exerts on block 1. 2 [ Free Body Diagrams and Law or Definitio. 3
A 75 lb horizontal force is exerted on a 150 lb rested chair. The coefficient of static friction between the chair and the floor is 0.55. Determine the static frictional force action on the chair. A horizontal force is exerted on a 150 lb rested chair. the coefficient of static friction between the chair and the floor is 0.55. Determine the maximum horizontal force that can be applied to the chair before it moves.