Question

Answered step-by-step

Asked by JusticeCobra576 on coursehero.com

4) A freight train consists of **two 8.3 • 104 kg engines and 45 cars with average masses of 5.8 • 104 kg each**.

**Randomized Variables**

**m = 8.3 • 104 kg**

**m2 = 5.8 • 104 kg**

**f = 7.75 • 105 N**

** (Part A)** What is the magnitude of the force must each engine exert backward on the track to accelerate the train at a rate of 5.00 • 10-2 m/s2 if the force of friction is 7.75 • 105 N, assuming the engines exert identical forces? This is not a large frictional force for such a massive system. Rolling friction for trains is small, and consequently trains are very energy-efficient transportation systems.

**F =**

** Part (b) ** What is the force in the coupling between the 37th and 38th cars (this is the force each exerts on the other), assuming all cars have the same mass and that friction is evenly distributed among all of the cars and engines?

**F' =**

Solved by verified expert

Answered by anoopvijayan on coursehero.com

um dolor sit amet, consectetur adipiscing elit. Nam lacinia pul

Unlock access to this and **over 10,000 step-by-step explanations**

Have an account? Log In

um dolor sit amet, consectetur adipiscing elit. Nam lacinia pulvinar tortor nec facilisis. Pellentesque dapibus efficitur laoreet. Nam risus ante, dapibus a molestie consequat, ultrices ac magna. Fusce dui lectus, congue vel laoreet ac, dictum vitae odio. Donec aliquet. Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam lacinia pulvinar tortor nec facilisis. Pellentesque dapibus efficitur laoreet. Nam risus ante, dapibus a molestie consequat, ultrices ac magna. Fusce dui lectus, congue vel laoreet ac, dictum vitae odio. Donec aliquet. Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam lacinia pulvinar tortor nec facilisis. Pellentesque dapibus efficitur laoreet. Nam risus ante, dapibus a molestie consequat, ultrices ac magna. Fusce dui lectus, congue vel laoreet ac, dictum vitae odio. Donec aliquet. Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam lacinia pulvinar tortor nec facilisis. Pellentesque dapibus efficitur laoreet. Nam risus ante, dapibus a molestie consequat, ultrices ac magna. Fusce dui lectus, co

Unlock every step-by-step explanation, download literature note PDFs, plus more.Get Access