An object of mass m = 5.00 kg, attached to a spring scale, rests on a frictionless, horizontal surface as shown in Figure. The spring scale, attached to the front end of a boxcar, reads zero when the car is at rest. (a) Determine the acceleration of the car if the spring scale has a constant reading of 18.0 N when the car is in motion. (b) What constant reading will the spring scale show if the car moves with constant velocity? Describe the forces on the object as observed (c) by someone in the car and (d) by someone at rest outside the car.

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

A: Write the given values with the suitable variables. a=1.21 m/s2m=102.9 kg Here, a is the…

Q: An object of mass m = 5.05 kg, attached to a spring scale, rests on a frictionless, horizontal…

A: Mass, m = 5.05 kg Constant reading, F = 17.2 N

Q: the

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Q: Three objects are connected by two very light, flexible, and unstretchable string as shown in the…

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Q: A force of 76.4 N in the horizontal direction is required to set a 37.3-kg box, initially at rest on…

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Q: A car of mass 972 kg is traveling 22.9 m/s when the driver applies the brakes, which lock the…

A: (a) Use the kinematic equation to solve for the acceleration of the car when it comes to the rest…

Q: An object with mass m, - 5.20 kg, rests on a frictionless horizontal table and is connected to a…

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Q: A 44-kg box rests on the floor. The coefficients of static and kinetic friction between the bottom…

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Q: The figure shows and chair is 77.6 kg. With what force magnitude must the man pull on the rope if he…

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Q: In the figure, blocks A and B have weights of 47 N and 22 N, respectively. (a) Determine the minimum…

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Q: In the figure, blocks A and B have weights of 54 N and 22 N, respectively. (a) Determine the minimum…

A: (given) Weight of block A = 54 N Weight of block B = 22 N (a) N = WA+WCf = μs N T  =μsWA+WC22=0.2354…

Q: able is holding a 82 x 100 kg elevator that is initially stationary. (a) Find the tension in the…

A: The given data are: m=82×100 kgu=0 m/s Here, m denotes the mass of an elevator and u denotes the…

Q: You push your 2 kg textbook with a constant force of 100.0 N across a surface with zero coefficient…

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Q: (a) Draw free-body diagrams of both objects. (b) Find the magnitude of the accelerations of the…

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Q: 28º.) Calculate the minimum force F (in N) he must exert to get the block moving. What is its…

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Q: The distance between two telephone poles is d = 52.0 m. When a 0.850-kg bird lands on the telephone…

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Q: A 9.9 kg mass resting on a smooth (frictionless) horizontal table is connected to a cable that…

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Q: In an investigation a student placed a 0.85 kg cart on a table. They tie one end of a light string…

A: Given Information:- Mass of the cart is M=0.85 kg Mass of the hanging mass is m=0.50 kg We have to…

Q: You are in a helicopter towing a 129-kg laser detector that is mapping out the thickness of the…

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Q: A 2.30 kg ball hangs at one end of a rope that is attached to a support on a railroad car. When the…

A: Given information: The mass of the ball (m) = 2.30 kg The angle the rope makes (θ) = 3.800 Let the…

Q: object of mass m = 4.75 kg, attached to a spring scale, rests on a frictionless, horizontal surface…

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Q: In the figure, blocks A and B have weights of 47 N and 22 N, respectively. (a) Determine the minimum…

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Q: In the figure, blocks A and B have weights of 47 N and 22 N, respectively. (a) Determine the minimum…

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Q: The figure shows a man sitting in a bosun's chair that dangles from a massless rope, which runs over…

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Q: A contestant in a winter games event pushes a 56.0 kg block of ice across a frozen lake as shown in…

A: To find (a) minimum force(b) acceleration

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: Body A in the figure weighs 96 N, and body B weighs 16 N. The coefficients of friction between A and…

A: Given:  ωA=96N,  ωB=16N    μS=0.59, μk=0.25,  θ=28°

Q: Objects 1 and 2 are connected by a string, as shown. They are moving toward the right, and the…

A: Given, Force F=30 N Mass m1=4.1 kg Mass m2=9.5 kg Friction coefficient  μ1=0.14 Friction coefficient…

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Q: An Atwood Machine is set up as shown. Mass m1 = 2.00 kg and m2 = 3.00 kg. Assume the connecting…

A: m1 = 2 kg m2 = 3 kg

Q: A 1,125-kg car is pulling a 325-kg trailer. Together, the car and trailer have an acceleration of…

A: Apply Newton’s second law in the x-direction Fx-T=mcaFx-mta=mcaFx=mc+mta=1125 kg+325 kg2.10…

Q: Two blocks are positioned on surfaces, each inclined at the same angle of 43.6 degrees with respect…

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Q: A cord passing over and easily turned pulley (one that is both massless and frictionless) has a 7.0…

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Q: Refer to the figure. Let the mass of the block be 3.80 kg and the angle be 30.0°. Find (a) the…

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Q: A contestant in a winter games event pushes a 55.0 kg block of ice across a frozen lake as shown in…

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Q: Calculate the magnitude of the acceleration (in m/s2) starting from rest if each dog exerts an…

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Q: A 78.0 kg man stands on a spring scale in an elevator. Starting from rest, the elevator ascends,…

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Q: An elevator filled with passengers has a mass of 1700 kg. (a) The elevator accelerates upward from…

A: Given:-          The free body diagram for the elevator is:

Q: A car of mass 922 kg is traveling 23.9 m/s when the driver applies the brakes, which lock the…

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Newton’s Third Law of Motion

The horse pulls the cart and the cart pulls the horse in response as per Newton third law. So the big question is, “Don’t the two forces cancel each other? How does the cart accelerate?”