Train cars are connected by couplers, which are under tension as the locomotive pulls the train. Imagine you are on a train speeding up with a constant acceleration. As you move through the train from the locomotive to the last car, measuring the tension in each set of couplers, does the tension increase, decrease, or stay the same? When the engineer applies the brakes,the couplers are under compression. How does this compression force vary from the locomotive to the last car? (Assume only the brakes on the wheels of the engine are applied.)

Q: In the example of a box on a horozontal frictionless floor, if I push the 2kg box with 20 N of…

A: Given: The mass of the object is 2 kg. The applied force on the object is 20 N.

Q: Mona tion m2 An object of mass m1= 6kg placed on a frictionless, horizontal table is connected to a…

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Q: A block of mass m, = 19.4 kg is on a frictionless table to the left of a second block of mass m, =…

A: Given :-           mass  m1 = 19.4 kg           mass  m2 = 20.7 kg          horizontal force →F…

Q: Two blocks (A) and (B) of respective masses ma = 2 kg and mg = 3 kg, are placed in contact side by…

A: Answer:-  12 N  Given  Mass of block A (mA) = 2 kg  Mass of block B(mB) = 3 kg  Force (F) = 20 N…

Q: A block weighing 300 N is moved uniformly over a horizontal surface by a force of 60 N. What is the…

A: The force acting on the block is shown in the figure. The force that apply horizontally (i.e. 60N)…

Q: The figure below shows a block with mass m = 5.9 kg pulled up a plane inclined at an angle of θ =…

A: Given: mass of the block, m = 5.9 kg angle of inclination, θ = 28°  Force at which the block is…

Q: You want to hang an object from the ceiling of an elevator that has a maximum acceleration of 4.0…

A: Given: a=4 m/s2T = 45 Ng = 9.8 m/s2m=?

Q: If the skier above weighs 150 lbs, what is the magnitude of the force of the skier (FS), the normal…

A: Weight=150lbs

Q: A block of mass m₂ = 39 kg on a horizontal surface is connected to a mass m₂ = 16.7 kg that hangs…

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Q: A force of 9.4 N pulls horizontally on a 1.4-kg block that slides on a rough, horizontal surface.…

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Q: A block of mass m, = 14.4 kg is on a frictionless table to the left of a second block of mass m, =…

A: Given, m1 = 14.4 Kg m2 = 17.2 Kg F =113 N

Q: Now that you have tension, focus on the forces acting on the apple. Considering that the apple is…

A: In this question they said that we have tension, focus on the forces acting on the apple.…

Q: Two blocks of masses m and 2m are held in equilibrium on a frictionless incline as in the figure. In…

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Q: A small object hangs from a string attached to the rearview mirror of your car that is accelerating…

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Q: Imagine that you are holding a book weighing 4 N at rest on the palm of your hand. (a) A downward…

A: Note :- Since we only answer up to 3 sub-parts, we’ll answer the first 3. Please resubmit the…

Q: Two forces are applied to a 2.0 kg block on a frictionless, horizontal surface. F, = 2.0 N F2 = 8.0…

A: Given Weight of man on an stationary elevator = 900 N When elevator start moving Weight of man =…

Q: A traffic light of mass 220 kg is hanging with metal wires as shown below. Determine the tension…

A: Given is the traffic light of mass 220 kg,assume tension is wire A is T1 and tension in wire B is…

Q: A rock pulled by two cords in the opposite direction moves at a constant acceleration. What can be…

A: Given that a rock is under constant acceleration and is being pulled by two string in opposite…

Q: On his way to class, a student on a skateboard is accelerating on a downhill stretch. Which of the…

A: Given that skateboard is accelerating on a downhill stretch, So Direction of acceleration = downward…

Q: You are pushing a 40 kg sled across some snow with a coefficient of friction of 0.2. How much force…

A: Answer :  The force required to push must be 78.4N .

Q: A boat with mass of 2.6 * 10° kg is traveling at 1.5 * 10' m/s. What is the magnitude of the force…

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Q: A 0.3 kg coffee cup is sitting on a desk. If the acceleration due to gravity is 9.8 m/s what is the…

A: Given  Mass of coffee cup is m= 0.3 kg Acceleration due to gravity is g= 9.80 m/s2

Q: Two blocks, of weights 3.6 N and 7.2 N, are connected by a massless string and slide down a 30…

A: The net force on the first box,

Q: A vendor pulls a 250 N cart filled with pop cases so that it rolls along a level floor where the…

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Q: In Figure (a), a constant horizontal force Fa is applied to block A, which pushes against block B…

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Q: A small object hangs from a string attached to the rearview mirror of your car that is accelerating…

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Q: A body hangs from a spring balance supported from the roof of an elevator. If the elevator has an…

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Q: Q3) A 2 kg aluminum block and a 6 kg copper block are connected by a light string over a…

A: The free-body diagram of the copper block on the inclined plane is shown below. Here, N2, T, and a…

Q: Thinking of a sled on a very icy, flat road, so slick that there is no friction, we will imagine…

A: Given: A sled is moving from left to right on a very icy, flat road, so slick that there is no…

Q: A fisherman is fishing from a bridge and is using a "30.0-N test line." In other words, the line…

A: The force F=30.0N  To find the constant speed and the acceleration whose magnitude 2.04m/s

Q: Consider Newton's First Law. Which one of the following is a correct statement ? O The net force…

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Q: A person is skiing in a horizontal snow surface with a net acceleration of 0.2 meters per second per…

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Q: m = 5.1 kg pulled up a ramp inclined at an angle of ? = 28° with a force of magnitude F = 33 N…

A: Mass of the block (m)=5.1 kg Angle of inclination of the ramp (θ)=28o Magnitude of force parallel to…

Q: Block B has mass 6.00 kg and sits at rest on a horizontal, frictionless surface. Block A has mass…

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Q: As you stand on a floor,does the floor exert an upward force against your feet? How much force does…

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Q: Boxes A and B are subjected to the same level of net force. The accelerations of the two boxes are…

A: Given data box A has three times the acceleration of box B. That is aA=3aB. Boxes A and B are…

Q: .4N pulls horizontally on a 1.3-kg block that slides on a rough, horizontal surface. This block is…

A: We know that the force of  9.4 N  pulls horizontally on a m1= 1.3 kg and This block is connected by…

Q: Two masses, m1 and m2, are connected by a string that passes over a pulley. Mass m1 slides without…

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Q: Consider a person standing on a scale in an elevator. If the elevator accelerates upwards with an…

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Q: A person of weighing 0.83 kN rides in an elevator that has an upward acceleration of 0.8 m/s2. What…

A: The weight of the person W=mg=0.83 kN=830 N Where m is the mass of the person and g is the…

Q: You are standing on the floor of a stationary elevator.  You weigh 85 kg, what is the magnitude of…

A: Given  Mass (m) = 85 kg

Q: A man pulls a 50.0-kg block of ice with a rope over his shoulder as shown below. Suppose that he…

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Q: Riders on the Power Tower are launched skyward with an acceleration of 4g, after which they…

A: Given data: The launch acceleration of the rider is a1=4g. The mass of the rider is m=60 kg.   The…

Q: Consider a person standing on a scale in an elavator. If the elevator accelerates upwards with an…

A: Any person standing in a lift feels heavier when lift moves upwards, and similarly he feels lighter…

Q: Ignoring friction, If an equal force is applied to a 2 kg box and a 6 kg box, the acceleration of…

A: Given data:  Mass (m1) = 2 kg Mass (m2) = 6 kg Equal force is applied to the boxes

Q: Whenever the net force on a body is zero, its acceleration A) is also zero; B) cannot be equal to…

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Newton's First Law of Motion

If a very smooth ball is rolled down an inclined surface with zero friction, the ball will continue to roll indefinitely for an infinite time, in an attempt to reach to the same height on the opposite hill!