Which of the following is true about friction         Static friction is always equal or larger in value than kinetic friction.       Friction always depends on the area of contact between two surfaces

Q: A student presses a book between his hands, as the drawing indicates. The forces that he exerts on…

A: Given: Weight of the book, W=26.9 N co-efficient of static friction, μs=0.414

Q: a) A delivery truck with two stacked crates in the back brakes quickly. The crate on the bottom just…

A: GIVEN: top crates Mass m = 27kgand the mass of bottom creats 22kgcoefficient of static fraction…

Q: You want to push a 7-kg box up a 15° ramp. The coefficient of kinetic friction between the ramp and…

A: The friction force is given by  f = μ N where, N is the normal force, μ is the coefficient of…

Q: A rope wrapped twice around a post will support a mass of 1800 kg when a force of 200 N is exerted…

A: Given, wrapped twice mass = 1800 kg Weight supported by the rope = 1800*9.8 = 17640 N Force applied…

Q: A block of mass m is pulled on a rough surface by a rope exerting a force FRope on Block at an angle…

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Q: Which of the following statements is correct? (Select all that apply.)

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Q: The unit of drag coefficient depends on the dimensions of the falling object O True False

A: To determine: The correct option.

Q: A 100 N wooden crate is pushed across a concrete floor. The friction forces is equal to 62 N. find…

A: Given :F=62 NN=100We know that the formula to the frictional force is ,F= μN

Q: A 78 kg crate rests on a rough horizontal surface. The coefficient of static friction and…

A: Mass of crate (m) = 78 kg Coefficient of Static Friction (μs) = 0.3 Coefficient of Kinetic Friction…

Q: A 10 kg box is pulled along a horizontal surface by a force of 40 N applied at a 30 ̊ angle from the…

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Q: A 976-kg crate is placed on an adjustable inclined plane. As one end of the incline is raised, the…

A:

Q: A flatbed truck is carrying a crate along a level road. The coefficient of static friction between…

A:

Q: Which of the following statements is true about friction? k and us are independent on the mass of…

A: μk is the coefficient of kinetic frictionμs is the coefficient of static friction Properties of…

Q: If two surfaces are in contact and moving relative to one another, then the friction between them is…

A: SOLUTION AS

Q: If a book is sliding across a table, what factors will have a major influence on the force of…

A: The expression for the friction force between two surfaces is Ff=μN=μmg The frictional force depends…

Q: When one body is actually moving over the surface of other body, the friction is known as: [A]…

A: Friction force is the force which always opposes the relative motion between the two objects.

Q: An applied force of 6.2 N acts on a 2.1-kg object, pushing it horizontally across a surface where…

A: Given data :- applied force F = 6.2 N mass m = 2.1 kg coefficient of kinetic friction μk= 0.15

Q: A crate of milk chocolate is being moved up a 63° ramp as shown. The crate has a mass of 10 kg. The…

A: Given:θ=63°m=10kgF=1320 NN=1136 Nμk=0.180d = 1.9m

Q: A box filled with appliances rests on a floor. Only gravity and the support force of the floor act…

A: Given, A box rests o floor (a=0) Pull Force , P acts on it not enough to move Let f be frictional…

Q: A constant applied force F, of 15.0 N pushes a box with a mass m = 7.00 kg a distance x = 15.0 m…

A: Given: Applied force Fp=15.0 N. Mass of the block m=7.0 kg. Distance traveled by block x=15.0 m. The…

Q: Part A What is the magnitude of the force vector required to keep the crate moving at constant…

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Q: 2. Consider an armchair sitting on the flat surface of a floor. The armchair has a mass of 25.0 kg.…

A: Given information: The mass of the armchair (m) = 25.0 kg The coefficient of static friction…

Q: Which of the following is correct? The angle of friction is equal to depression angle at impending…

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Q: When does kinetic friction occur in trying to push a heavy object? O when the object is still when…

A: when the force you apply is smaller than the maximum static frictional force.

Q: A student measures the ANGLE of the incline to be TOO SMALL. How will this effect the student's…

A: The coefficient of friction depends on the material and roughness of the surfaces in contact and not…

Q: A 2106-kg sports car is traveling down an inclined plane with an angle of 31°. The coefficient of…

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Q: True/False:  Air resistance is a force that only happens when an object is moving.   True/False:…

A: “Since you have posted multiple questions, we will provide the solution only to the first five…

Q: A 55-kg box rests on a horizontal surface. The coefficient of static friction between the box the…

A: The mass of the box=55kg.The coefficient of static friction =0.30.The coefficient of kinetic…

Q: A box is sliding across a rough horizontal floor while Mary exerts a force on it. The magnitude of…

A: Friction Force: A kinetic friction force on a body only acts when a body is moving. The kinetic…

Q: A student wants to determine the coefficient of static friction μ between a block of wood and an…

A: Introduction: The static friction opposes the motion when the body is at rest. The static friction…

Q: A box with mass 5.0kg is attached to a string tightly wound to circular frictionless pulley of…

A: Analyze the diagram of the given system. The angular acceleration of the pulley is calculated by…

Q: An 8 kg block rests on a horizontal surface whose coefficients of friction are: s = 0.4 and k =…

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Q: Which of the following is correct? The angle of friction is equal to depression angle at impending…

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Q: A force of 1.2 N is applied to an object of mass 1.5 kg to just make it move. Determine the…

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Q: ound.   You are pushing up the ramp with a force of 10N.  Starting from rest, the box uniformly…

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Q: A 99-N crate rests on a rough horizontal floor.  A person applies a 18-N horizontal force to this…

A: If applied force is less than limiting friction then body remain at rest. And static friction equals…

Q: Suppose that A = 2i + j. B=i- 4j + k, and = j+k. What is the magnitude of the vector

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Q: An object is moving with constant velocity. Which of the following best describes the force(s)…

A: Scenario: Object is moving with constant velocity.

Q: Blocks A, B, and C are being pushed across a frictionless table by a hand that exerts a constant…

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Q: 8bject as the previous problem, however a different axis of rotation: going through the plate's…

A: given: mass of rectangular plate = M mass of each ball m = M/12 sides of rectangle a and b

Q: A 489-kg crate is placed on an adjustable inclined plane. As one end of the incline is raised, the…

A: let friction force is f  gravitational force down the incline  = mgSin31°  Now, by fbd of block…

Q: An object of weight 80 N accelerates across a rough floor surface when a horizontal force of 50 N is…

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Q: A horizontal force of 12 N pushes a 0.50-kg book against a vertical wall. The book is initially at…

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Newton's Second Law

Newton’s laws of motion describe the relationship between the motion of an object and forces acting on it. Newton’s law of motion has two types as follows: