a child pulls a toy train with a force of 12N that makes a 60 degree angle with the horizontal. the train is made of an engine (250g) a d two cars (200g each) attached together. The force of firction between the engine and the ground is 2N, and 1N for each car. What is the acceleration of the train? What is the force holding the last car to the first car?

Q: A box rests on a horizontal surface. You apply a force on the box of F = 100 N at an angle, θ, below…

A:

Q: The child pulls the sled up a hill. The hill is inclined at an angle of 10º. The sled has a mass of…

A: θ = 10om = 8 kg a = 0.28 ms2The tension in the rope = T

Q: A ball, with a mass of 5 kg, acceelerates in the +a direction with a magnitude of 5 m/s? and in the…

A: Given Data : The mass of the ball is given as Mb = 5 Kg. The acceleration of the ball in the…

Q: Abel is pulling a cart, but he's pulling on a handle that causes his force to be applied to the cart…

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Q: Superman throws a 2453 N boulder at an adversary. What horizontal force must Superman apply to the…

A: This is a problem of the application of Newtons laws of motion. According to Newton's third law of…

Q: You create an elevator to get down a cliff.   Your and the bucket’s mass together is 80 kg (m2).…

A: The free-body diagram of the system is shown below. Here, T is the tension and a is the…

Q: An object with a mass of 6.0 kg accelerates 4.0 m/s? when an unknown force is applied to it. What is…

A: Given Data:   m = 6 kg a = 4 m/sec2

Q: An Object with a mass of 6.2 kg accelerates 12.3 m/s2 when an unknown force is applied to it. What…

A: Given value--- mass = 6.2 kg. acceleration = 12.3 m/s2  . We have to find--- force ?

Q: A 20kg cart is tied to a 30kg cart on a slope of 10o. Assume the wheels are frictionless. With what…

A: mass of cart 1 =30 kg mass of cart 2=30 kg slope = 10o a= 2 m/s2

Q: a flat,horizo

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Q: brenda pushes a box horizontally with a force of 200 N (F=200N).  The mass of the box is 50 kg.…

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Q: A child is rolling a ball down a slide to his friend. The ball has a mass of 3 kg, and the slope of…

A:

Q: A 39.0-kg child steps on a scale in an elevator. The scale reads 420 N. What is the magnitude of the…

A: Given: Mass of the child m is: 39.0 kg Reading of force on the scale is 420 N. Formula Used: The…

Q: a test rocket is falling downward at a constant speed (however, it is acceleration in the horizontal…

A: The figure gives the free body diagram of all forces acting on the rocket.

Q: The coefficient of friction between a 40kg piano and the ground is 0.85. What will the piano's…

A: Given data: Mass of the piano, m=40 kg Coefficient of friction, μ=0.85 Horizontal force, F=450 N…

Q: On planet X, a 5.0 X 101 kg bar can be lifted with a force of just 180 N. a. What is the…

A: Mass of bar = 50 kg  Force required to lift a bar = 180 N

Q: man pulls a 50kg box at a constant speed across the floor. he applies a 200 N force at an angle of…

A: Mass of box = 50 kg Applied force = 200 N Angle (θ) = 30 degree

Q: The following forces are acting on a 250 g box on a horizontal surface: A downward force of gravity…

A: Given, The following forces are acting on a 250 g box on a horizontal surface:  A downward force of…

Q: The Fig. Q1b below shows forces F1, F2 and F3 acting on a particle P. Determine the resultant force…

A: F1→=7cos30°i^+7sin30°j^F2→=13cos60°i^+13sin60°j^F3→=-11cos20°i^-11sin20°j^ The Resultant force,…

Q: A small glider is coasting horizontally when suddenly a very heavy piece of cargo falls out of the…

A: The glider, along with the cargo, are both moving initially horizontally. So their initial vertical…

Q: A ball is thrown up from the ground with some initial velocity at an angle of 45degree to the…

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Q: A rescue helicopter is lifting a man (weight = 822 Newton's) from a capsized boat by means of cable…

A: a)The required tension when the man is given an initial upward acceleration is,

Q: Superman throws a 2400 N boulder at an adversary. What horizontal force must Superman apply to the…

A: Given data W=2400 Na=12 m/s2

Q: determine the man's upward acceleration. Use g = 9.80 Question 15. A person whose weight is 519 N is…

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Q: You are participating in a three-way pulling game. Red lines show competitors force vectors. 560 N…

A: Given F1 = 560 N,  53° above the horizontal from +x axis F2 = 400 N, 45° below the horizontal from…

Q: A 4 kg mass has just two forces acting on it. One is 10 N up and the other is 10 N down. What is the…

A: given:-  m= 4kg Force acting in up direction = 10N Force acting in down direction = 10 N

Q: A person weighing 879. N rides in an elevator that has a downward acceleration of 1.37 m/s2. What is…

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Q: Suppose a 60.0 Kg gymnast climbs a rope. a) What is the tension in the rope if he climbs at…

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Q: Seth wants to drag a 20.0 kg. sled over a flat field.  He pulls on the rope horizontally, and the…

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Q: An astronaut's weight on earth is 800 N. What is his weight on Mars, where g=3.76m/s2?

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Q: Derek pushes a 10kg crate along a rough surface with 35N of force. He observes that it is only…

A: Given data:  Mass of crate (m) = 10 kg Force applied (F) = 35 N Acceleration (a) = 2 m/s2 Required:…

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!