A railroad car having a mass of 15 Mg is coasting at 1.5 m/s on a horizontal track. At the same time another car having a mass of 12Mg is coasting at 0.75 m/s in the opposite direction. If the cars meet and couple together, determine the speed of both cars just after the coupling. Find the difference between the total kinetic energy before and after coupling has occurred, and explain qualitatively what happened to this energy

Q: An empty freight car with a mass of 10,000 kg rolls at 5 m/s along a level track and collides with a…

A: Law of conservation of momentum: In the inelastic collision, when two or more bodies collide the…

Q: In 45 seconds, a 2.5-ton vehicle can reach 120 mph from rest. Exclude friction losses while…

A: To find: The engine's output. Given: The time taken by vehicle to reach v=120 mph is t=45 sec. The…

Q: A particle travelling in a plane has an initial linear momentum of (14i + 10j) kgm/s and is acted…

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Q: 2-lb cylinder is falling from A with a speed 10 ft/s onto the platform. The has an unstretched…

A: weight of the cyinder velocity of cylinder falling unstretched length of the spring original…

Q: Determine the linear momentum of a person whose mass is 80 kg and who is running at a rate of 3 m/s.…

A: Solution   Linear momantum of  a person       L = mv         = 80 x 3         = 240 kg m /s

Q: Box A is traveling down the smooth incline (0 = 11°). The velocity of box A just before impact with…

A: Given data: VAi=5 m/smA=3 kgθ=11°mB=20 kg Need to determine the momentum of box just before the…

Q: A space vehicle has a mass of 500 kg and is moving towards the moon. Calculate the kinetic and…

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Q: A block of mass 0.25 kg travels down a frictionless surface with a velocity of 4.5 m/s to the left…

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Q: A motorcycle and rider have a combined mass of 350kg. The vehicle’s velocity is 100 km/hr. The rider…

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Q: A lightweight drone (1.00 kg) is launched at 800 m high and moves upward at a constant velocity…

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Q: 1) Find the velocities of both the blocks A and B at the moment when the block A displaces downward…

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Q: The 15-Mg truck drives onto the 261-Mg barge from the dock at 18 km/h and brakes to stop on the…

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Q: In 50 seconds, a 3.2-ton vehicle can reach 140 mph from rest. Exclude friction losses while…

A: To find : Determine the engine's out  Given : time t=50sec initial velocity u=0 m/s final velocity…

Q: The two spheres A and B each have a mass of 400 g. The spheres are fixed to the horizontal rods as…

A: Given   Moment, M = 0.7 Nm       Length, L = 0.3 m        Mass, m = 400 g Find  Speed, v

Q: A 9.1-Mg truck is resting on the deck of a barge which displaces 261 Mg and is at rest in still…

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Q: 9.6-Mg truck resting on of a barge wnich displaces Mg toward he bow at a speed relative to the barge…

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Q: With a mass of 2.0 kg, the ball B (vB1) = 2.4m/s and rotates in an orbit with a radius of r1 = 0.8…

A: Given data: Mass of ball 'B', m=2 kg. Initially, it rotates in an orbit of radius, r1=0.8 m with…

Q: The change in momentum is 1 N-s for a ball that strikes the floor for 0.02 s. Which of the following…

A: Given Data  Change in momentum = 1 Ns ball strikes the floor =0.02sec

Q: The masses m1= 4 kg and m2= 2 kg move in the directions shown in Figure. Before the collision, the…

A: Given: The magnitude of mass 1, m1 = 4 kg The magnitude of mass 2, m2 = 2 kg The initial velocity of…

Q: vehicles are approaching a road junction, both moving with speed (12.5 m/s). One vehicle has mass…

A: Mass of Car A (mA) = 1000 kgMass of Car B (mB) = 70 kgInitial velocity of both cars (v) = 12.5…

Q: A 7.8-Mg truck is resting on the deck of a barge which displaces 374 Mg and is at rest in still…

A: following is the answer to the above problem-

Q: Find the kinetic energy of a woman of mass 50,0 kg running at a speed of 8.70 m/s.

A: Given data : Mass m=50 kg Velocity V=8.70 m/s   Required: Kinetic energy

Q: ; truck drives onto the 310-Mg barge from the dock at 27 km/h and brakes to stop on the deck. The…

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Q: etermine the acceleration produced in a body of 20 kg mass when it is acted upon by a force of 200 N

A: Given   Mass, m = 20 kg   Force, F = 200 N Find  Acceleration, a

Q: The 5.2-lb cylinder is falling from A with a speed = 10 ft/s onto the platform. The spring has an…

A: Given:the weight of the cylinder the velocity of cylinder filling the unstretched length of the…

Q: The 14-Mg truck drives onto the 383-Mg barge from the dock at 18 km/h and brakes to stop on the…

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Q: The 4-kg collar B can slide freely on the vertical plane with constant angular acceleration given by…

A: Given  , Mass of the collar , m =4 kg Angular acceleration of the rod , α= 10 rad/s2 Mass is…

Q: The 2-Mg car increases its speed uniformly from rest to 19 m/s in 28 s up the inclined road Part 1:…

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Q: Determine the magnitude of the net impulse exerted by the hockey stick on the puck.

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Q: A vertical take-off and landing aircraft has a mass of 9000 kg. A constant upward thrust of 100 kN…

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Q: The 12-Mg truck drives onto the 366-Mg barge from the dock at 27 km/h and brakes to stop on the…

A: Write the given data. Mbarge=366 MgVi, barge=0Vf,barge=vMtruck=12 MgVi, truck=27 km/hVf,truck=0

Q: The box (A) of mass 25 kg is initially at rest. Then motor exerts a force F15 t^2 as shown below,…

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Q: The 441-kg elevator starts from rest and travels upward with a constant acceleration a,= 4.6 m/s.…

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Q: 4A ball with mass _m= 1kg is hit with a golf club on a horizontal surface. The golf club is in…

A: For the solution refer below images.

Q: Calculate the velocity v of the 50-lb cylinder after the 20-lb cylinder has dropped 6 ft.

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Q: A force F = (7 i—10j)N acts on a particle that a displacementd = (2i + 3j)m .find the work done by…

A: Given Data:   F = (7 i—10j)N d=(2i+3j) m Work done =F.d= F = (7 i—10j).(2i+3j)=7(2)-10(3)=14-30=-16…

Q: Determine the maximum power that must be supplied by the engine, which operates with an efficiency…

A: To find Maximum power that must be supplied by engine  Average Power Supplied by engine

Q: A 10.5-Mg truck is resting on the deck of a barge which displaces 251 Mg and is at rest in still…

A:

Clutches, Brakes, Couplings, and Flywheels

The clutch is described as a machine element used to connect or disconnect two shafts together to transmit torque or power. The clutch works on the principles of friction. The clutch is commonly used in automobiles to transfer power from the driving shaft to the driven shaft.