For each of the situations given, state whether frictional forcesdo positive, negative, or zero work on the italicized object.(a) A plate slides across a table and is brought to rest by friction.(b) A person pushes a chair at constant speed across arough, horizontal surface. (c) A box is set down on a stationaryconveyor belt. The conveyor belt is then turned on and the boxbegins to move, being carried along by the belt. (d) A personexerts a horizontal force on a banana at rest on a counter top.The banana remains at rest.

Q: A mass is moved along a rough horizontal floor at constant velocity by applying a force F by means…

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Q: Bonny Blair of the United States set a world record in speed skating when she skated 5.00 x 10^2 m…

A: Kinetic energy is defined as energy due to virtue of its motion. Kinetic energy =12mv2 GIVEN : Mass…

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Q: The work done by a force that varies in magnitude can be obtained from which of the following…

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Q: Starting a race, a 68.2-kg sprinter runs the first 7.04 m in 1.60 s, starting from rest and…

A: Given: The mass (m) of the sprinter is 68.2 Kg. The distance (S) covered by the sprinter is 7.04 m.…

Q: If a 50 kg object initially at rest is displaced 25 m by a constant net force of 600 N in the…

A: Work done is equal to change in kinetic energy of the body . Work done = (Force)*(displacement)…

Q: Cite an example in which a force is exerted on an object without doing work on the object.

A: The work done will be zero when the applied force on an object is perpendicular to the displacement…

Q: A heavy box ins pushed on a honzontal oor or a straight sedion of length L by mearn of a force of…

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Q: Find the work done by a force of constant magnitude F=0,1KN.If the displacement of the body is…

A: Given data: Force, F=0.1 kN = 100 N Displacement, r=100 mm =100×10-3 m = 0.1 m Angle between…

Q: i. A 5.0-kg block is pushed 3.0 m up a vertical wall with con- stant speed by a constant force of…

A: Given  Mass of block = 5.0 kg  Angle =30°  coefficient of friction=u= 0.3    Displacement =d= 3.0m…

Q: A 1.08E+2 kg crate is being pushed across a horizontal floor by a force P that makes an angle of…

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Q: Sir Jaykel Cuenca, a royal engineer of the Aiheistdräg Kingdom, was tasked to determine an efficient…

A: Given: Mass M=50 kg Mass m=100 kg μk=0.4 θ=15° Incline height, h=5 m

Q: A 2-kg object moving on a horizontal frictionless surface with a speed of 4 m/s is brought to rest…

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Q: A fully loaded, slow-moving freight elevator has a cab with a total mass of 1600 kg, which is…

A: Given:-         Total mass  M=1600 kg        Distance to cover  d=39 m        Time taken  t=2.2…

Q: a box of animal crackers is dragged at constant speed across a surface by horizontal force of 20.0 N…

A: solution is given by

Q: A single force acts on a I kg panticle-like object in such a way that the position of the object as…

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Q: Find the work available for a car weighing 1290N, that travels 200. meters

A: 1)weight of car = 1290 N distance travelled = 200 m

Q: What average mechanical power (in W) must a 61.5 kg mountain climber generate to climb to the summit…

A: The mechanical power of the climber can be found as, Here, W and t represent the work-done and…

Q: A 10N horizontal force is exerted on a 100kg object that slides on a frictionless, horizontal…

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Q: A big man is towing a large box with a cord that makes an angle of 25 degreeswith the horizontal.The…

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Q: If you walk 2.0 m horizontally forward at a constant velocity carrying a 20-N object, what is the…

A: Given Data : The distance travelled horizontally is given as d = 2 m The weight of the object is…

Q: How much work is done on a downhill skier by an average breaking force of 813 newtons to stop her in…

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Q: As a young man, Tarzan climbed up a vine to reach his tree house. As he got older, he decided to…

A: To determine: A young man Tarzan climbed up a vine to reach the tree house, what did the king of…

Q: Discuss whether any work is being done by each of the followingagents and, if so, whether the work…

A: The definition for work is,

Q: The surface of the preceding problem is modified so that the coefficient of kinetic friction is…

A: Given:The coefficient of kinetic friction is decreasedmass  = 8.0 mSpeed = 5.0 m/s

Q: A truck travels uphill with constant velocity on a highway witha 7.0° slope. A 50. - kg package sits…

A: a)According to work energy theorem, work done is obtained from change in kinetic energy. Since the…

Q: What distance can a crane lift a 55.0 N box, if it expends work of 2.00 x 104 Joules?

A: given ;    force, F = 55.0 N , work done = 2.00 x 104  Joules  formula used;     W = F x d   where,…

Q: Is the work done by the applied force positive or negative when a heavy body is lowered to the…

A: Let h be the height at which the body is initially, F be the applied force, W be the work done by…

Q: A student wearing frictionless in line skates on a horizontal surface is pushed by a friend with a…

A: The given data are: F=45 NKf=352 JKi=0 J Here, Ki denotes the initial kinetic energy, Kf denotes the…

Q: A 0.14-kg pinecone falls 16 m to the ground,where it lands with a speed of 13 m>s. (a) With what…

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Q: A 121-kg crate is being pushed across a horizontal floor by a force P that makes an angle of 25.5 °…

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Q: • A 1300-kg elevator is lifted at a constant speed of 1.3 m>s througha height of 22 m. How much…

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Q: What is the net work of a system if there is an applied force pushing it at a value of 7592.58 N at…

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Q: What average mechanical power (in W) must a 60.0 kg mountain climber generate to climb to the summit…

A: solution as

Q: What average mechanical power (in W) must a 70.5 kg mountain climber generate to climb to the summit…

A: The expression for the average mechanical power (P) is,

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Q: In the figure shown, if the mass (m = 10Kg) is moving with constant speed and traveled a distance d…

A: Given Data : The mass of the object is given as m = 10Kg. The distance travelled by the object on…

Q: A crate moves 10 m to the right on a horiizontal surface as a woman pulls on it with a 10-N force.…

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Q: A 10 kg block is pushed with a constant external force of 10 Newtons horizontally on a floor with a…

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Q: If an object is moved a distanced up an inclined plane at an angle of θ with respect to the…

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Q: A3kg crate is placed at the bottom of an inclined frictionless plane making an angle 30° above the…

A: Work done  W = force × displacement