Explain a train accelerates uniformly along a straight track

Assignment Help Mechanical Engineering
Reference no: EM13137624

Problems of Velocity, Angular Velocity and Acceleration in Trains and Wheels

Question 1:

A train accelerates uniformly along a straight track and passes three trackside markers. The distance between the first two markers is equal to 0.25 km and between the second and third the distance is 0.4km. The train takes 26.6 seconds to travel between the first two markers and its speed as it passes the second marker is equal to 57.6 km/h.

Sketch the linear velocity-time diagram and calculate the following:

(a) the uniform rate of acceleration
(b) the time taken for the train to travel between the second and third markers
(c) the average velocity of the train for the journey between the first and third markers

Question 2:

An engine flywheel initially rotating at 24 rev/min is accelerated uniformly for 3.8 seconds whilst rotating through 41 revolutions. It is then immediately retarded at a uniform rate of 3.6 rad/s^2. The velocity of the flywheel is then held constant and finally decelerated uniformly at a rate of 1.4 rad/s^2 to a halt, this final deceleration taking place of 37 revolutions. The total time taken during these changes is equal to 2.1 minutes.

Sketch the linear velocity-time diagram for the flywheel and calculate the following

(a) the initial acceleration
(b) the maximum velocity reached
(c) the constant speed value
(d) the average angular velocity

Reference no: EM13137624

Questions Cloud

Probability cars arrive during any given hour of operations : The mean arrival rate is 15 cars per hour. What is the probability that 20 or more cars will arrive during any given hour of operation?
Statements regarding the sale of subsidiary shares : All of the following statements regarding the sale of subsidiary shares are true except which of the following?
Probability students selected are undergraduate students : The ground floor of the campus building, what is the probability that at least 3 students selected are undergraduate students?
How much energy (kj) is required : at 1 atm, how much energy (kJ) is required to heat 81.0g of H2O(s) at -22.0 degrees celcius to H2O(g) at 119.0 degrees celcius?
Explain a train accelerates uniformly along a straight track : A train accelerates uniformly along a straight track and passes three trackside markers. The distance between the first two markers is equal to 0.25 km and between the second and third the distance is 0.4km
Conduct and interpret test to determine difference : Conduct and interpret a test to determine whether or not there is any difference in the final destination of each model of automobile. Interpret your findings.
What mass of potassium carbonate must be weighed out : What mass of potassium carbonate K2CO3, must be weighed out to prepare 125.0mL of a 0.0500M solution of salt?
What amount to use operations and maintenance : The DRM only has Operations and Maintenance, Army (OMA) funds to purchase the system. The DRM must spend less than what amount to use Operations and Maintenance, Army appropriations for the computer system?
What is the balance in the lease liability account : The selling price of the equipment is $325,000, and the rate implicit in the lease is 8%, which is known to Silver Point Co. What is the book value of the leased asset at December 31, 2011, and what is the balance in the Lease Liability account?

Reviews

Write a Review

 

Mechanical Engineering Questions & Answers

  Determination of the heat transfer coefficient values

this would provide you with a set of Reynolds numbers. Next, using the integral method, determine the velocity profiles within the boundary layer to be followed by determination of the heat transfer coefficient values for your selected Reynolds numbe..

  Mainframe computing is way to manage enterprise data

Mainframe computing used to be the only way to manage enterprise data. Then personal computers changed the data management scene. How do these two computing styles differ, and how did shift to PC-based computing evolve.

  Power system assignment - safety requirements

The assessment to design a substation and the associated protection System.

  Force of the water on the gate

Determine the magnitude of the horizontal and vertical components of the force of the water on the gate.

  Meaning of the term mechatronics

Briefly describe the meaning of the term mechatronics both in terms of the 'systems approach' and the technology involved.

  Diffusion coeffiecient and calculate constant

Diffusion Coeffiecient, Calculate Constant, The diffusion coeffiecient for Cr^+3 in Cr2O3 is 6x10^-15 cm2/s at 727 degrees Celcius and is 1x10^-9 cm2/s at 1400 degrees Celcius.

  Future value your rich godfather has offered

Your rich godfather has offered you a choice of one of the three following alternatives: $10,000 now; $2,000 a year for eight yeaers; or $24,000 at the end of eight years

  Determine the minimum no of teeth required

Determine the minimum no of teeth required on pinion in order to avoid interference which is to gear with 1 a wheel to give a gear ratio of 3 to 1

  Explain what is the basic design load rating

Design life is 9630 hours, rotating at 250 rpm, load of 880 lbs, what is the basic design load rating (assuming no axial loads)?

  Explain steam enters a turbine operating at steady-state

Steam enters a turbine operating at steady-state at 700 ºF and 600 lbf/in2 and leaves at 0.6 lbf/in2 with a quality of 90%. The turbine develops 12,000 hp

  Minimum weight design of a variable shape three-bar truss

Obtain a new solution, and determine whether any buckling constraints are active. If no buckling constraints are active for L = 10 in., re-run the analysis by increasing L , and estimate the value of L at which at least one buckling constraint b..

  Turbofan engine on a test stand in the maintenance

The explanation provided below, provide the solution to the problem in simple and easy to understand steps. A turbofan engine on a test stand in the maintenance shop is being run at a continuous setting of 22,700 lbs of thrust. The TSFC is 0.5 lbs/..

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd