FREE Trial

The subway train shown is traveling at a speed of 30 mi/h when the brakes are fully

Question:

The subway train shown is traveling at a speed of 30 mi/h when the brakes are fully applied on the wheels of cars A, causing it to slide on the track, but are not applied on the wheels of cars A or B. Knowing that the coefficient of kinetic friction is 0.35 between the wheels and the track,

The subway train shown is traveling at a speed of

Determine
(a) The distance required to bring the train to a stop,
(b) The force in each coupling.

Transcribed Image Text:

30 mivh 40 tons 50 tons 40 tons

Fantastic news! We've Found the answer you've been seeking!

Step by Step Answer:

Answer rating: 76% (13 reviews)

a b Force in each coupling Car A ...View the full answer


answer-question-section
Answered By
tutor-profile-image
Sagar Kumar
I am Mechanical Engineer with CGPA of 3.98 out of 4.00 from Pakistan. I went to Government Boys Degree College, Sehwan for high school studies. I appeared in NUST Entrance Exam for admission in university and ranked #516. My mathematics are excellent and I have participated in many math competitions and also won many of them. Recently, I participated in International Youth Math Challenge and was awarded with Gold Honor. Now, I am also an ambassador at International Youth Math Challenge, I have been teaching when I was in 9th class class year 2012. I have taught students from 6th class to university level.
5.00+ 1+ Reviews 10+ Question Solved
Related Book For  book-img-for-question
Vector Mechanics for Engineers Statics and Dynamics

Vector Mechanics for Engineers Statics and Dynamics

ISBN: 978-0073398242

11th edition

Authors: Ferdinand Beer, E. Russell Johnston Jr., David Mazurek, Phillip Cornwell, Brian Self

See More Books
Question Posted:
See More Questions

Related Video

Static friction and kinetic friction are two types of friction that occur when two objects are in contact with each other. Static friction is the force that must be overcome to initiate motion between two surfaces that are in contact with each other but are not moving relative to each other. It is caused by the interlocking of rough surfaces at the microscopic level, and it increases as the force pushing the surfaces together increases. Once motion between the surfaces starts, the static friction is no longer present. Kinetic friction, also known as sliding friction, is the force that opposes the motion of two surfaces that are in contact with each other and are moving relative to each other. It is caused by the rubbing of the surfaces against each other and the resistance of the molecules in the surfaces to being moved. Kinetic friction is generally less than static friction, but it can still be a significant force, especially at high speeds. Both static and kinetic friction can be quantified using a coefficient of friction, which is a dimensionless number that represents the ratio of the frictional force between two surfaces to the normal force (the force perpendicular to the surfaces). The coefficient of static friction is typically greater than the coefficient of kinetic friction for a given pair of surfaces, because it takes more force to overcome the interlocking of the surfaces at rest than to maintain motion once it has started.

Students also viewed these Mechanics questions

Corporate Taxation Examples And Explanations 4th Edition - ISBN: 0735588724 - Free Book